Only some users reporting "Resource Not Found" error. Does this make sense?

I am seeing a a couple of errors coming up on Crittercism (Crash reporting service) for my published Android app. The trace is the following: ``` 0 java.io.IOException: Resource not found: "org/joda/time/tz/data/ZoneInfoMap" ClassLoader: dalvik.system.PathClassLoader@45908320 1 at org.joda.time.tz.ZoneInfoProvider.openResource(ZoneInfoProvider.java:211) 2 at org.joda.time.tz.ZoneInfoProvider.<init>(ZoneInfoProvider.java:123) 3 at org.joda.time.tz.ZoneInfoProvider.<init>(ZoneInfoProvider.java:82) 4 at org.joda.time.DateTimeZone.getDefaultProvider(DateTimeZone.java:462) 5 at org.joda.time.DateTimeZone.setProvider0(DateTimeZone.java:416) 6 at org.joda.time.DateTimeZone.<clinit>(DateTimeZone.java:115) 7 at org.joda.time.chrono.GregorianChronology.<clinit>(GregorianChronology.java:71) 8 at org.joda.time.chrono.ISOChronology.<clinit>(ISOChronology.java:66) 9 at org.joda.time.base.BaseDateTime.<init>(BaseDateTime.java:61) 10 at org.joda.time.DateTime.<init>(DateTime.java:155) ``` Searching shows this this is usually a compiling problem (Usually that the Joda Time Library was not added to the build path or something), but then why would only about 4 users out of a couple thousand see this error? My only guess is that someone is trying to decompile the app to pirate it (Its a fairly popular paid app), and sees this error when they incorrectly re-compiled. In that case I am glad they are seeing errors and I dont need to worry about this. The other weird thing is that the code causing the problem was surrounded by a try/catch, which didnt seem to catch it: ``` try { DateTime dt = new DateTime(); DateTimeFormatter fmt = ISODateTimeFormat.dateTime(); return fmt.print(dt); } catch (Exception e) { //Report issue to Analytics service } ``` Which to me, makes it seem even more unlikely that this error would show up on Crittercism, since it should've been caught. Can anyone explain this?