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[custom build 20040525, JDK 1.5.0 b51] I opened two project one depending on the other one, executed one of them and after closing the application I selected both of them and selected 'Close 2 projects'. ConcurentModificationException was thrown. Cannot reproduce.
Created attachment 15129 [details] exc stack trace
Reporter was using JDK 1.5, no info about 1.4. I believe this is dupe of a bug which was already fixed.
*** This issue has been marked as a duplicate of 43786 ***
Verified duplicate.