Eclipse & the error 'Specified VM install not found: type Standard VM, name'

Scenario:

• I had a project that was previously building OK
• At some point I upgraded the version of java
• Came to rebuild the project and the Ant build was failing with the error popup
• Specified VM install not found: type Standard VM, name
• & it was referring to an old JDK that did not exist on my PC & was not referred to by eclipse with the list of installed JREs
• I searched in the project for the JDK listed 'jdk1.6.0_26' 
• No luck - could not find anythine
• I deleted the project & reloaded it from SVN
• Still No luck - I got the same error

After a bit of googling, I found this site http://www.javaworkspace.com/VMNotFound.do

I went for option '2' of edting the launch file in the directory simply renaming the JDK after stopping eclipse.

• C:\projects\WORKSPACE\.metadata\.plugins\org.eclipse.debug.core\.launches

All sorted now thanks.