NullPointerException attempting to open grails command prompt

[mikemil]

I just upgraded from sts 2.5.0 to 2.5.1 and now am having problems opening the grails command prompt within STS. I get the error below:

!ENTRY org.eclipse.core.jobs 4 2 2010-11-17 20:08:01.765
!MESSAGE An internal error occurred during: "Retrieving available scripts".
!STACK 0
java.lang.NullPointerException
at com.springsource.sts.grails.ui.internal.inplace.Gr ailsCompletionUtils$GrailsProposalProvider$2.run(G railsCompletionUtils.java:187)
at org.eclipse.core.internal.jobs.Worker.run(Worker.j ava:54)

[mikemil]

Never mind - think I just solved my own problem. My GRAILS_HOME was set to 1.3.3 and 2.5.1 now has 1.3.5. I changed that, plus made sure that my project properties were updated with the correct grails home location, which triggered a 'grails upgrade' and now I am working again!