Solved! Just incase anyone else comes across this. In SR1 if you haven't got the engine installed you won't have the Metastorm.ProcessEvents.CodeBehindSupport.dll in "C:\Program Files\Metastorm BPM\Designer\Dotnetbin" Metastorm have esculated the issue so it should be installed with newer releases. [Update] Metastorm KB article created for this issue: PF34194 Dan



