Ah, yes - good point! The DTC seems to be up'n'running, but I can see some logs in the event viewer, that the DTC had stopped a transaction..and that prior...

I've received that same error message when performing a simple delete-statement ("delete from rpt_reports where createddate<'2013-04-01'") - the message I get is:

Msg 4060, Level 11, State 1, Line 65536

Cannot open...