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I had installed jackpot into my 6.1 build last week (contrib/jackpot, contrib/jackpot.rules). Today I uninstalled it and now starting the IDE causes two NPE's on startup (traces attached.) I would think maybe this is a Jackpot module bug, except I noticed a similar problem after uninstalling the findbugs module a week ago. So it looks to me like an IDE bug, maybe with some of the module caching enhancements in 6.1, maybe something else. I shouldn't have to manually sanitize (or delete) my userdir when I uninstall a module. Most users will have to simply delete the userdir and that's a huge deal (loss of customizations, installed plugins, etc.), so I made this a P2. Downgrade it if there is a better workaround that can be described here.
Created attachment 56018 [details] NPE's after uninstalling jackpot
Created attachment 56019 [details] messages.log, shows lots more detail of startup issues.
I attached messages.log, as it shows far more detail of the startup issues...
Removing "[userdir]/var/cache/all-*.dat" appears to resolve the problem so it looks like it's an IDE caching problem. Perhaps a simple solution is to invalidate all caches on uninstallation of any module. It's trivial to rebuild them, correct?
probably problem with updating caches
Similar problem as with issue 126602, what shall happen when a module is uninstalled?
Yardo, isn't this fixed by your fix of 126602?
Yes, it was problem with caches. I've just tried similar scenario and things are working for me, after I fixed issue 127396. *** This issue has been marked as a duplicate of 127396 ***