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Build 200502172122 (pre-beta) Running a JSP ended with "Deployment error: null." I have worked with IDE only a little. I have deployed only approx. 3 times before.
Created attachment 20411 [details] Message log
Project was created with existing source. I haven't changed server.
*** Issue 54506 has been marked as a duplicate of this issue. ***
Setting the TM to 4.1.
I can't reproduce this issue, it has been probably fixed. Feel free to reopen it if it occurs again.