ORA-12154: TNS:could not resolve the connect identifier specified (PLSQL Developer)

I need to use PLSQL Developer to access oracle databases. I get the following error when I try to connect to my database. `ORA-12154: TNS:could not resolve the connect identifier specified.` I am able to use SQLPLUS from the command line to connect to the database, and tnsping returns successfully, but I can't figure out why PLSQL Developer will not work - it's using the right tnsnames.ora file, and the connection string in there is correct because it's the same one that tnsping uses. Anyone have an idea what I can do to fix this? I've looked at other threads about this specific error with no luck. tnsnames.ora ``` ORCL = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = MININT-AIVKVBM)(PORT = 1521)) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl) ) ) ``` sqlnet.ora ``` SQLNET.AUTHENTICATION_SERVICES= (NTS) NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT) ``` sqlpus command line image here PLSQL Developer Connection Preferences: image here