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 ...