This bug was originally marked as duplicate of bug 110956, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.

Build: NetBeans IDE 7.1 Beta (Build 201109252201)
VM: Java HotSpot(TM) Client VM, 19.0-b09, Java(TM) SE Runtime Environment, 1.6.0_23-b05
OS: Windows 7

User Comments:
GUEST: Attempted to attach java doc for javafx 2 on mac and subsequently get this when moving the cursor.

GUEST: Showed up while Editing and refactoring

GUEST: just copy and pasted a code almost similar to the one i copied.

GUEST: I was coding a servlet in my web application when this error popped out! To be more precise, I was working with SQL statements..

I got another problem too... the ALTER TABLE statement in Derby does not execute at all....

lujop: Copy paste from one class two another. It seems that autoimport is playing some role in the error

GUEST: Editing problems. happens continuously, after 
Had to restart IDE,

GUEST: I was pulling a git repo

GUEST: Editing problem. Intermittently pops up.

GUEST: craete junittest from tools. the junit exists allready

GUEST: Just editing some java code

GUEST: While opening refactoring menu. -sguha

GUEST: While editing, fixing syntax problems.




Stacktrace: 
java.lang.AssertionError: o2=-1
   at org.netbeans.modules.editor.hints.AnnotationHolder$PositionComparator.compare(AnnotationHolder.java:1256)
   at java.util.Collections.indexedBinarySearch(Collections.java:319)
   at java.util.Collections.binarySearch(Collections.java:307)
   at org.netbeans.modules.editor.hints.AnnotationHolder.getPosition(AnnotationHolder.java:1038)
   at org.netbeans.modules.editor.hints.AnnotationHolder.setErrorDescriptionsImpl(AnnotationHolder.java:957)
   at org.netbeans.modules.editor.hints.AnnotationHolder.access$1400(AnnotationHolder.java:120)