Yes, there was. People had to set IE not to update, or it broke Poser. At least until Poser was updated. Though that might have been Flash-related, too. Some kind of Flash plugin IE had.

There's a thread about it here:

https://www.renderosity.com/rr/mod/forumpro/?thread_id=2873783

Not sure if Poser 7 was affected. Poser 8 was, and Poser 6 was not.