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I tryed to reproduce issue 169370 from user and walk through the tutorial: http://www.netbeans.org/kb/61/soa/synchsample.html At the steps with editing Assign2 properties Mapper stopped to accept commands from menu bar. Also I found Assign1, edited earlier, became broken and no longer displays as expected.
Please attach some stack trace
Created attachment 85444 [details] trace
The attached memory dump doesn't contain anything related to bpel mapper. Moreover it contains just a little about netbeans at all. There isn't a deadlock there. So it's impossible to make any conclusion. I tried repeating the steps from the tutorial. I can't reproduce the problem.
QA could not reproduce the problem with the GFESB Build of 10/26/09, including NetBeans IDE 6.7.1 (Build 200910252201). Subject to the user supplying a better screen print of the "no longer displas as expected" state or a better set of steps for reproducing the problem, this ticket is closed.