Tried it from the server, with admin privilege. Everything looks ok from there, but it's tricky because of the intermittent nature of the problem.

Next thing to do will probably be...

not pristine indeed...

Thanks for the help. Really appreciated,

Elno

Connection timeout was 600sec. Got it at 720, no change.

Server is three floors up (connection 100meg).

Sometimes, I can get a 'no' on a script generation, but I can design the...

Yeah.

Problem solved. Didn't work yesterday, but works today. Won't touch it now... even if I don't understand everything.

Don't get why 'with nocheck' is needed when data in the table is...

Thanks for the input.

Problem is still there...

I ran the 'SELECT... sysobjects' command, and the result is null.

But the messages I get when I run the add or drop commands are...

When I don't get the error, it does (for the whole db or parts of it).

If I get the error, I can't get anything back, and it's logical in...

Although I have the strong impression I created the constraint, I may be wrong.

However, I don't understand why I can't create a constraint on a table (altering it) on the...