After I have installed Scala-IDE (http://download.scala-ide.org/update-current-35), I cannot do any osrt of Java search in Eclipse (be it a Reference search, or a Call Hierarchy for example). If I remove the Scala-IDE components, everything works fine again.

I get the following exception trace in the Error Log:

java.lang.NullPointerException
at org.eclipse.jdt.core.search.SearchPattern.createPattern_aroundBody1$advice(SearchPattern.java:338)
at org.eclipse.jdt.core.search.SearchPattern.createPattern(SearchPattern.java:1)
at org.eclipse.jdt.internal.corext.callhierarchy.CallerMethodWrapper.findChildren(CallerMethodWrapper.java:134)
at org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper.performSearch(MethodWrapper.java:298)
at org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper.doFindChildren(MethodWrapper.java:229)
at org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper.getCalls(MethodWrapper.java:83)
at org.eclipse.jdt.internal.ui.callhierarchy.DeferredMethodWrapper.getCalls(DeferredMethodWrapper.java:65)
at org.eclipse.jdt.internal.ui.callhierarchy.DeferredMethodWrapper.fetchDeferredChildren(DeferredMethodWrapper.java:79)
at org.eclipse.ui.progress.DeferredTreeContentManager$1.run(DeferredTreeContentManager.java:234)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

The session data attached with the error:

eclipse.buildId=
java.version=1.6.0_20
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Framework arguments: -product org.eclipse.epp.package.java.product
Command-line arguments: -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.java.product

I'm using Eclipse Galileo, Build id: 20100218-1602.