Avast declared VideoCacheView – part of Nirsoft-Tools – as threat or virus. Avast then offered to declare it as false positive and put it onto the exclusion list … additionally I had to restore it from virus chest … done … and the next attempt to run it results in the same procedure: considered as virus and running was inhibited …
Only way is to stop Avast protection for the duration of the use of the program … but that cannot be the solution …
Please do not start multiple posts on the same topic. 
Sorry – this thread here is treating the problem of nonworking exclusion list – while that thread there is treating impossibility to acces the webpage and download the tool package. I consider “exclusion list” and “no acces to website” as completely different tasks concerning even different parts of avast (file system shield vs. web shield) – even if the problems occur with the same tools-package …