I just received a call from Abstrax and it does appear that we were paid, albeit with a check from another company.  In our defense we tried repeatedly to contact them without succes, but a canceled check is a canceled check.

It sounds like the company was going through some sort of transition.

I therefor retract my previous post.  We were paid.  Mea culpa.

If anyone needs to contact Abstrax regarding past due invoices I have the contact info.