Me too, opened a ticket at Line 6, the response was I should try using a different computer, haven't heard from them yet since my latest reply.
Def not a good solution tho, The AvsFilter file exists in the system.
You were then facing a different issue. I've also tried those instructions and reinstalled the latest driver, which didn't seem to help. The yellow exclamation still appears on the driver (see my first post).
@punkymonkey666
I'm facing the issue on Win10 64bit, so I don't think it's going to resolve anything.
I tried completely deleting the driver and this didn't help either.