I am having an issue with AI RoboForm please help, it happens when i try to renew

I upgraded my Anti-virus (not internet security) program to 2011 from the emailed invitation I had recieved for a free upgrade to Antivirus 2011. I tried to renew it through the program itself and when I click to buy the renew a popup appears and continues to reproduce. It kept popping up more and more. I had like 10 or so pop-ups of the same thing. I terminated IE through the task manager in fear that if i clicked a button that a virus would install. Is this an issue? can I just click yes to continue? I looked on google and it said that roboform is just a form filler but i wanted to be sure first. I even tried the option to upgrade to internet security and it did the same thing. But I just want to renew my anti-virus program not upgrade. It tells me that I can still continue with the purchase or terminate it. But since it kept reproducing itself I wanted to check here first.

 

Assertion failed: c=0 s=-null-
GetLastError returned: 0
OS version: 5.1 build 2600 (Service Pack 3) platform=2
IE version: 6.0.2900
DLL:
EXE: C:\Program Files\Internet Explorer\IEXPLORE.EXE
RF version: 4-4-9
Lang:
File: D:\p\roboform\Filler\FormFiller.cpp
Line: 3121