Please contact the System Administrator error message

Hi,

I have a problem with one of my old processes. In about a week ago a n error message started to pop out: 'Please contact the System Administrator' when press Complete button, Pend or Terminate on the child process - DAS_General. Lock header and all pop out window functions (pend, terminate, reject, etc.) coming from DAS_Common process which is publish through DAS_General. DAS_Reconciliation - another child process also uses DAS_Common, but there are no issues. Process works properly on UAT and LIVE environments. I've copied UAT version into DEV, but an error still occurs. I have tried to rollback versions from team servers and clean publish, but it didn't work. Also debugging didn't gave us any clues as there was lots of runtime generated java scripts and we don't know how they work.

Please advise.

Regards,

Kat