[kh99]

Well, first of all that mod is basically a copy of the vbulletin code for the original recaptcha version, with minor changes made for the new version. That error message means that the part that is supposed to connect to google to verify the response failed in some way. Since you're also getting the same message from the old recaptcha version, then it's pretty clear that the problem isn't in my mod. I posted everything I could think of in the mod thread. I recommend that you go back to the original version of recaptcha until you figure out the problem.