Problem with format and destionation for Schedule

Hi!

We are in a middle of migration to Xi R3 SP2 and when I try to schedule a document I have this error text under:

Schedule/Formats and Destinations/Formats and destinations

displayErrorMessage="VIEWER:VIEWER_ERR_DEFAULT (Error: INF )"; traceErrorMessage="\u003Cinput type="hidden" name="BENCHERROR" value="Error Number : - Error Description : VIEWER:_VIEWER_ERR_DEFAULT"\u003E";

Anyone who knows what I should do?

Regards, Marianne