Hi Mabel
Does rebooting your system solve the problem?
This sounds like a network connection problem. One thing I would try is to reinstall Payables from scratch, just to see what happens - not that I'm suggesting you try that unless you are comfortable doing that.
In any case, this error message is not one we encounter very often and is probably not related to Adagio.
If you have an Adagio consultant, I think you might be best to contact him/her.
Steve