HTTP error 503 when deploying app on tomcat from NetBeans?

I updated `NetBeans` from 7.3 to 7.4 on my MacBook. Before updating, everything was working fine, but after installing `NetBeans` 7.4, when i tried to deploy a web application on `tomcat`, it gave me following error: ``` ant -f "/Volumes/DEVELOPMENT/Projects/Order Mapper/Swan/Server/Swan" "-Dbrowser.context=/Volumes/DEVELOPMENT/Projects/Order Mapper/Swan/Server/Swan" -DforceRedeploy=false -Ddirectory.deployment.supported=true -Dnb.wait.for.caches=true -Dnb.internal.action.name=run run init: deps-module-jar: deps-ear-jar: deps-jar: library-inclusion-in-archive: library-inclusion-in-manifest: compile: compile-jsps: Starting Tomcat process... Waiting for Tomcat... Tomcat server started. In-place deployment at /Volumes/DEVELOPMENT/Projects/Order Mapper/Swan/Server/Swan/build/web Deployment is in progress... deploy?config=file%3A%2Fvar%2Ftmp%2Fcontext7415672549510654952.xml&path=/Swan Server returned HTTP response code: 503 for URL: http://localhost:8084/manager/text/deploy?config=file%3A%2Fvar%2Ftmp%2Fcontext7415672549510654952.xml&path=/Swan /Volumes/DEVELOPMENT/Projects/Order Mapper/Swan/Server/Swan/nbproject/build-impl.xml:1087: The module has not been deployed. See the server log for details. ``` below is the the code at `line 1087` in `build-impl.xml`: ``` <nbdeploy clientUrlPart="${client.urlPart}" debugmode="false" forceRedeploy="${forceRedeploy}"/> ``` When i saw the server log, nothing was available! But I see following in `localhost_access_log` file: ``` 127.0.0.1 - - [15/Jan/2014:17:21:48 +0500] "HEAD /netbeans-tomcat-status-test HTTP/1.1" 404 - 127.0.0.1 - - [15/Jan/2014:17:21:48 +0500] "HEAD /netbeans-tomcat-status-test HTTP/1.1" 404 - 127.0.0.1 - - [15/Jan/2014:17:21:49 +0500] "HEAD /netbeans-tomcat-status-test HTTP/1.1" 404 - ``` Any help will be appreciated. Thanks in advance! Edit: Below is the IDE Log when trying to deploy application on `tomcat` ``` INFO [org.netbeans.modules.tomcat5.TomcatManagerImpl]: TomcatManagerImpl connecting to: http://localhost:8084/manager/text/deploy?config=file%3A%2Fvar%2Ffolders%2Fvv%2Fdsk5zwq114j5hgp2k6hq9plr0000gn%2FT%2Fcontext4112527509427233412.xml&path=/Swan java.io.IOException: Server returned HTTP response code: 503 for URL: http://localhost:8084/manager/text/deploy?config=file%3A%2Fvar%2Ffolders%2Fvv%2Fdsk5zwq114j5hgp2k6hq9plr0000gn%2FT%2Fcontext4112527509427233412.xml&path=/Swan at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1626) at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468) at org.netbeans.modules.tomcat5.TomcatManagerImpl.run(TomcatManagerImpl.java:561) Caused: java.io.IOException: Server returned HTTP response code: 503 for URL: http://localhost:8084/manager/text/deploy?config=file%3A%2Fvar%2Ffolders%2Fvv%2Fdsk5zwq114j5hgp2k6hq9plr0000gn%2FT%2Fcontext4112527509427233412.xml&path=/Swan at sun.reflect.GeneratedConstructorAccessor81.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1675) at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1673) at java.security.AccessController.doPrivileged(Native Method) at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1671) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1244) [catch] at org.netbeans.modules.tomcat5.TomcatManagerImpl.run(TomcatManagerImpl.java:596) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042) INFO [org.netbeans.modules.j2ee.deployment.impl.TargetServer]: Cannot incrementally deploy to more than one target INFO [org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment] The module has not been deployed. See the server log for details. [catch] at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:238) at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:161) at org.netbeans.modules.j2ee.ant.Deploy.execute(Deploy.java:111) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292) at sun.reflect.GeneratedMethodAccessor176.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:435) at org.apache.tools.ant.Target.performTasks(Target.java:456) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393) at org.apache.tools.ant.Project.executeTarget(Project.java:1364) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1248) at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:283) at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:541) at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153) INFO [org.netbeans.modules.tomcat5.TomcatManagerImpl]: TomcatManagerImpl connecting to: http://localhost:8084/manager/text/list java.io.IOException: Server returned HTTP response code: 503 for URL: http://localhost:8084/manager/text/list at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1626) at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468) at org.netbeans.modules.tomcat5.TomcatManagerImpl.run(TomcatManagerImpl.java:561) Caused: java.io.IOException: Server returned HTTP response code: 503 for URL: http://localhost:8084/manager/text/list at sun.reflect.GeneratedConstructorAccessor81.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1675) at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1673) at java.security.AccessController.doPrivileged(Native Method) at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1671) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1244) [catch] at org.netbeans.modules.tomcat5.TomcatManagerImpl.run(TomcatManagerImpl.java:596) at org.netbeans.modules.tomcat5.TomcatManagerImpl.list(TomcatManagerImpl.java:394) at org.netbeans.modules.tomcat5.TomcatManager.modules(TomcatManager.java:649) at org.netbeans.modules.tomcat5.TomcatManager.getAvailableModules(TomcatManager.java:460) at org.netbeans.modules.j2ee.deployment.impl.TargetServer.getAvailableTMIDsMap(TargetServer.java:420) at org.netbeans.modules.j2ee.deployment.impl.TargetServer.processLastTargetModules(TargetServer.java:457) at org.netbeans.modules.j2ee.deployment.impl.TargetServer.init(TargetServer.java:172) at org.netbeans.modules.j2ee.deployment.impl.TargetServer.deploy(TargetServer.java:607) at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:225) at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:161) at org.netbeans.modules.j2ee.ant.Deploy.execute(Deploy.java:111) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292) at sun.reflect.GeneratedMethodAccessor176.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:435) at org.apache.tools.ant.Target.performTasks(Target.java:456) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393) at org.apache.tools.ant.Project.executeTarget(Project.java:1364) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1248) at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:283) at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:541) at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153) INFO [org.netbeans.modules.tomcat5.TomcatManagerImpl]: TomcatManagerImpl connecting to: http://localhost:8084/manager/text/list java.io.IOException: Server returned HTTP response code: 503 for URL: http://localhost:8084/manager/text/list at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1626) at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468) at org.netbeans.modules.tomcat5.TomcatManagerImpl.run(TomcatManagerImpl.java:561) Caused: java.io.IOException: Server returned HTTP response code: 503 for URL: http://localhost:8084/manager/text/list at sun.reflect.GeneratedConstructorAccessor81.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1675) at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1673) at java.security.AccessController.doPrivileged(Native Method) at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1671) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1244) [catch] at org.netbeans.modules.tomcat5.TomcatManagerImpl.run(TomcatManagerImpl.java:596) at org.netbeans.modules.tomcat5.TomcatManagerImpl.list(TomcatManagerImpl.java:394) at org.netbeans.modules.tomcat5.TomcatManager.modules(TomcatManager.java:649) at org.netbeans.modules.tomcat5.TomcatManager.getAvailableModules(TomcatManager.java:460) at org.netbeans.modules.tomcat5.ide.TMIDResolver.lookupTargetModuleID(TMIDResolver.java:81) at org.netbeans.modules.j2ee.deployment.impl.TargetServer.checkUndeployForSharedReferences(TargetServer.java:351) at org.netbeans.modules.j2ee.deployment.impl.TargetServer.checkUndeployForSharedReferences(TargetServer.java:324) at org.netbeans.modules.j2ee.deployment.impl.TargetServer.processLastTargetModules(TargetServer.java:496) at org.netbeans.modules.j2ee.deployment.impl.TargetServer.init(TargetServer.java:172) at org.netbeans.modules.j2ee.deployment.impl.TargetServer.deploy(TargetServer.java:607) at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:225) at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:161) at org.netbeans.modules.j2ee.ant.Deploy.execute(Deploy.java:111) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292) at sun.reflect.GeneratedMethodAccessor176.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:435) at org.apache.tools.ant.Target.performTasks(Target.java:456) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393) at org.apache.tools.ant.Project.executeTarget(Project.java:1364) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1248) at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:283) at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:541) at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153) INFO [org.netbeans.modules.tomcat5.TomcatManagerImpl]: TomcatManagerImpl connecting to: http://localhost:8084/manager/text/deploy?config=file%3A%2Fvar%2Ffolders%2Fvv%2Fdsk5zwq114j5hgp2k6hq9plr0000gn%2FT%2Fcontext4761508169495242621.xml&path=/Swan java.io.IOException: Server returned HTTP response code: 503 for URL: http://localhost:8084/manager/text/deploy?config=file%3A%2Fvar%2Ffolders%2Fvv%2Fdsk5zwq114j5hgp2k6hq9plr0000gn%2FT%2Fcontext4761508169495242621.xml&path=/Swan at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1626) at java.net.HttpURLConnection.getResponseCode(HttpURLConnection.java:468) at org.netbeans.modules.tomcat5.TomcatManagerImpl.run(TomcatManagerImpl.java:561) Caused: java.io.IOException: Server returned HTTP response code: 503 for URL: http://localhost:8084/manager/text/deploy?config=file%3A%2Fvar%2Ffolders%2Fvv%2Fdsk5zwq114j5hgp2k6hq9plr0000gn%2FT%2Fcontext4761508169495242621.xml&path=/Swan at sun.reflect.GeneratedConstructorAccessor81.newInstance(Unknown Source) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:526) at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1675) at sun.net.www.protocol.http.HttpURLConnection$6.run(HttpURLConnection.java:1673) at java.security.AccessController.doPrivileged(Native Method) at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1671) at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1244) [catch] at org.netbeans.modules.tomcat5.TomcatManagerImpl.run(TomcatManagerImpl.java:596) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1432) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2042) INFO [org.netbeans.modules.j2ee.deployment.impl.TargetServer]: Cannot incrementally deploy to more than one target INFO [org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment] The module has not been deployed. See the server log for details. [catch] at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:238) at org.netbeans.modules.j2ee.deployment.devmodules.api.Deployment.deploy(Deployment.java:161) at org.netbeans.modules.j2ee.ant.Deploy.execute(Deploy.java:111) at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292) at sun.reflect.GeneratedMethodAccessor176.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) at org.apache.tools.ant.Task.perform(Task.java:348) at org.apache.tools.ant.Target.execute(Target.java:435) at org.apache.tools.ant.Target.performTasks(Target.java:456) at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393) at org.apache.tools.ant.Project.executeTarget(Project.java:1364) at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) at org.apache.tools.ant.Project.executeTargets(Project.java:1248) at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:283) at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:541) at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153) ```