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When I try to open update center (when J2ME module is turned OFF) the attached (Errorlog.log) NPE occurs. However when I turn J2ME module ON AND restart NB it opens up correctly again.
Created attachment 28780 [details] NPE when opening Update Center
Yes, we know about this problem, it really gets only if you have disabled/uninstalled J2ME module. Thanks for report, this will be fixed in the next version of NB. *** This issue has been marked as a duplicate of 72102 ***
BTW: it's also mentioned in release notes http://www.netbeans.org/community/releases/50/relnotes.html Anyway, thanks for the report - closing
module manager subcomponent is gone => resolved issues are assigned to autoupdate/code