All that detail is best supplied to Quark and get their replies.

The usual answer is to update your Quark version with the last patches they have and have a spotless machine without sin.

Just last week I helped someone with troubles but it turned out the machine had troubles in other applications. The culprit was some recent malware damaging the operating system. We gave it a few tries to repair the OS but a fresh install of the OS, drivers and such and it's working fine now.