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Likely caused by the fix for issue 44365. The IDE now quite frequently hangs during startup after throwing an exception. See attachment
Created attachment 15974 [details] IDE log file
I think appropriate priority is P0 ;) This defect causes fail of all our Performance Tests for actions, means fix it ASAP... I'll attach another stack trace with NPE (see attachment)
Created attachment 15979 [details] similar exception (NPE)
*** Issue 45504 has been marked as a duplicate of this issue. ***
I'll make fixing this my priority. Very likely this is due to fix of 44365. I checked whether the ide starts twice before integration and also wrote some tests to simulate some complex obscure problems, but probably the system can get into some unexpected state. I'll either fix the problem by end of Friday or revert the fix for issue 44365. Meanwhile please disable caching of lookup: -J-Dnetbeans.cache.lookup=false
*** Issue 45508 has been marked as a duplicate of this issue. ***
I've disabled the code from issue 44365 in InheritanceTree.java revision: 1.31 I cannot reproduce the problem now, but I have not seen it with the code in question either...
verified in [nb_dev](200408101800)