[maemo-users] How to troubleshoot: "Unable to perform operation. Internal error." when merging a contact?

[From: Nelson Ferreira]

Hi all,

Not sure if this is the proper forum, but I have a contact that when I
try to do a merge, so that I eliminate a duplicate I get the message:
"Unable to perform operation. Internal error."

Unfortunately, because I have IM fields on the contact I am not
willing to delete the contact because that would _remove_ that contact
from the IM servers. That leaves me in a pickle, since I have no clear
information of _what_ exactly failed...

Is there any way to troubleshoot this issue ?