Sounds like a version mismatch. Whatever SP level you are at, apply the latest Process Management patch to get both a server side update AND the workspace source zip update. Make sure you customization is on the updated source in the patch.
Thanks a lot Jon.
it working fine now. after reading your comments i realised my mistake. what i did actually, when i was customizing workspace code, i found files missing and realised that it contains bugs. so, i decided to apply workbench sp1 update for Es2 gm which updated the workspace source code.
and i started working on new souce code and after customizations done , i deployed it on server. but i found that when i was hitting any of the approval container window task, which involves interaction with livecycle. it is generating fault events. i put my whole day into debugging and sorting out. but no results.
as per the exeption, after you hit approve or deny button , it will go to TaskManager.prepare forSubmit() and there in taskutem ation , it is generating faultevent instead of resultevent for reason beyond my fathom.
But ,after you said about version mismatch, i got it imedaitely, that i applied the sp1 update to workbench only and not to server. So, i applied it to the server and sort out some issues while that. and finally evything working gr8 again.
thanks once again Jon.