Thanks Mihail I will try that. Following on from this how can I trap the return code? I have followed this: -http://msdn.microsoft.com/en-us/library ... 54(v=vs.85
So I have changed the custom action table entry which will report a fault in teh log but does the installer automatuically terminate or do I have to set a property to test?
I have been away on another project so trying to get back into this, so sorry if you have already answered this before.