I saw that solvusoft page before. My impression was that it wasn’t really addressing the problem, and instead, was taking some error, and just trying to get you to install their software.
I see that they have a fix for 42006 for Turbo Tax also:
http://www.solvusoft.com/en/errors/runtime-errors/intuit-inc/turbotax/42006-turbotax-error-42006/
http://www.solvusoft.com/en/errors/runtime-errors/avast-software-s-r-o/avast-antivirus/42006-avast-antivirus-error-42006/
So, they have their own version of CCleaner they want you to install, and that’s their idea of how to fix? I don’t think those actions would do anything.