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I created a new compiler type and assigned it. I closed the IDE. I reopened the IDE and got an exception.
Created attachment 4863 [details] ide.log
[nb34 Mar 03 dev] I tried to reproduce it without any exceptions appeared. Please add more detailed steps how to reproduce it. Thanks
I have no idea why, but sometimes when I open the IDE I get this exception (most times I don't) - sorry.
explorer validation runs asynchronously, this can be a problem
I can see a problem with explorer (de)serialization. The exception tells us that Options node cannot be selected because it is not under Options. This sounds strange but the stack trace suggests that during deserialization the node being deserialized can be different from the one that is there. This is just a suggestion - I did not investigate it thoroughly (so I might be totally off).
*** Issue 21910 has been marked as a duplicate of this issue. ***
CC'ing myself
fixed in cvs trunk (ExplorerManager rev 1.36)
verified in #20020403
Resolved for 3.4.x or earlier, no new info since then -> closing.