Hi Viviana, thanks. I've split several APS's out but haven't done this yet for the translation service. However the core APS that I have is sized to 4Mb so I don't think this is a server side error, and is more on the client side. I've tried to delete the local files under my username as you've suggested and this hasn't had any effect. What I'm now finding is that sometimes importing/exporting WebI reports from the server randomly works, and most of the time it fales with the NullPointerException. Quite frustrating!
Thanks again for your tip though.
Campbell