Hi Simon,
I have checked the details and to assist with the issue better please kindly provide the screenshot of the issue using below link.
http://avgclick.me/getscreenshot
Thank you.
Here are the screenshots. One shows the dialog where the file is blocked. No idea how to unblock the file when it is safe and the match was only based on heuristics. This happens quite often with programs I've compiled myself in debug mode.
Well, it helps to know how to add the exception but it's pretty inconvenient. There are way more false positives than the other way around so I'd appreciate it if you'd readd the add exception option to the dialog. Otherwise I will uninstall AVG alltogether. 
AVG is saying a file is containing a virus which is clean. It still blocks the file. How can I access it again? I can't find the option to allow execution of the file again? Usually the pop up gave the option to allow/ignore, but now it either adds it to quarantine where I can't remove it (when I check the check boxes they are unchecked after a few seconds).
How can I choose to ignore or allow the file?
Hi Simon,
I have checked the details and to assist with the issue better please kindly provide the screenshot of the issue using below link.
http://avgclick.me/getscreenshot
Thank you.
Ok, then I'll wait a bit longer and hope it get's a bit easier to use.