I am using IntelliJ 13.1.5 on Mac OSX Mavericks.
Since today I have problems with the return and tab keys in pom.xml files (they are not functioning any more).
When I try to do auto-completion (via ctrl-space) it shows a small blue box for a second, which instantly disappears again.
It seems to be empty, too.
Even live templates are not functioning anymore.
What can I do to get it running again?