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Created attachment 97423 [details] log I have had this error after changing in project properties for EJB some checkbox activity. Sometimes "Saving project properties" scheduler working fine somtimes not.
Created attachment 97425 [details] project
Assertion is coming from org.netbeans.modules.editor.lib2.view.ViewBuilder.repaintAndReplaceViews(ViewBuilder.java:450)
*** This bug has been marked as a duplicate of bug 183595 ***