IBM Lotus Notes/Domino 8.5 Forum (includes Lotus Notes Traveler)
RE: MIME conversion error "Cannot convert Notes Rich Text message to MIME message"
All of the fixes so far for MIME problems have been SPR hotfixes for Domino itself (Traveler is just calling the Domino APIs and asking for the MIME version). You will need to open a PMR to get the hotfix(es) from Domino for them. It will depend on the document, so it might be a new one or not.
Feedback response number RSSN8ERM8T created by Robert S Sielken on 03/08/2011