This bug was originally marked as duplicate of bug 177642, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.

Build: NetBeans IDE Dev (Build 201003290201)
VM: Java HotSpot(TM) Client VM, 11.0-b16, Java(TM) SE Runtime Environment, 1.6.0_11-b03
OS: Windows XP

User Comments:
GUEST: searched for text within all open projects and expanded the first result before the search was finished

GUEST: this occurred immediately after a previous error which I sent a report for also.  I expanded the second result in the search results after searching for text within all open projects and got a null pointer exception.  the previous error was that I expanded the first search result before the search was finished, and an exception occurred and the results did not expand.

FrantaM: Clicked an item in "Found xx matches" list in Find & Replace results window.

tboudreau: Clicked matches in a search window

epdv: Searched cloned repository for Java classes implementing some interface. Interrupted search after some locations were shown. When clicking on a result node/entry, this NPE pops up.

buzzword: Clicked to open a file after a project-wide regexp search.




Stacktrace: 
java.lang.NullPointerException
   at org.netbeans.modules.search.ResultViewPanel.getNextDetail(ResultViewPanel.java:976)
   at org.netbeans.modules.search.ResultViewPanel.findNextPath(ResultViewPanel.java:907)
   at org.netbeans.modules.search.ResultViewPanel.access$1200(ResultViewPanel.java:88)
   at org.netbeans.modules.search.ResultViewPanel$ArrowStatusUpdater.update(ResultViewPanel.java:1213)
   at org.netbeans.modules.search.ResultViewPanel$ArrowStatusUpdater.mousePressed(ResultViewPanel.java:1230)
   at java.awt.AWTEventMulticaster.mousePressed(AWTEventMulticaster.java:263)