I'm sorry, but I really can't follow you now. GSX surely doesn't change itself, and surely hasn't been updated between the 25th, when you said it worked, and 27th, when you said it's not working again.
So, since the program hasn't obviously changed, the only possible explanation is that something else you in your system has changed. If your antivirus doesn't have the ability to exclude specific files from scanning, then switch to a more reliable product, because an antivirus without that feature is entirely useless.
The free and always updated Security Essentials (or Defender) from Microsoft, doesn't mistakenly detects our products as threats AND, it has the ability to exclude specific files from scanning too, in case it's needed.
