Well. Got all the new stuff, and Lo! unfortunately, a bug showed its ugly face.
So.. We have
Windows XP Service Pack 2 (5.1.2600)
Windows Live Messenger 8.01.0106
Messenger Plus! Live 4.10.0.250
and..
It's a good old simple crash, with Windows error reporting invoked in my case.
So. that's it, just to inform all you hard-working Houstonians that we have a problem.
& I have Messpatch (for a number of changes) and A-Patch (just to remove JohnDoe says: thing.) Had them with the old versions too, everything OK then, of course.