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Home » Eclipse Projects » WindowBuilder » Cannot add selectionHandler
Cannot add selectionHandler [message #1006753] Fri, 01 February 2013 16:47
John Rellis is currently offline John RellisFriend
Messages: 1
Registered: February 2013
Junior Member

I am creating an SWT/JFace application, the application was working fine last week.

Now I started up eclipse, copied the project and I am seeing some very strange behaviour, the first of which is i cannot add a selectionHandler to a menu item, I get a null pointer exception.

I have attached screens and the bug report. I hope this is a simple configuration issue. If anyone could help that would be great!

Internal Error
WindowBuilder encountered unexpected internal error. 

This could be caused by a WindowBuilder bug or by a misconfiguration issue, conflict, partial update, etc.

Show stack trace. 
Hide stack trace. 

Stack trace:
	at org.eclipse.jdt.internal.core.JavaElement.openWhenClosed(
	at org.eclipse.jdt.internal.core.JavaElement.getElementInfo(
	at org.eclipse.jdt.internal.core.JavaElement.getElementInfo(
	at org.eclipse.jdt.internal.core.JavaElement.exists(
	at org.eclipse.wb.internal.core.utils.jdt.core.CodeUtils.getResolvedTypeName_resolveTypeVariable(
	at org.eclipse.wb.internal.core.utils.jdt.core.CodeUtils.getResolvedTypeName(
	at org.eclipse.wb.internal.core.utils.jdt.core.CodeUtils.getMethodSignature(
	at org.eclipse.wb.internal.core.utils.jdt.core.CodeUtils.findMethodSingleType(
	at org.eclipse.wb.internal.core.utils.jdt.core.CodeUtils.findMethod(



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