Noted the following:
1. Maintenance -> CSVI Pro -> Empty Temp Folder indeeds empties the /tmp folder but not the /logs folder (Although in CSVI Logs menu -> Action Type says "Empty the CSVI temporary folder and the log folder"

2. In CSVI Logs Screen, when i click on Delete or Delete All button, a pop-up appears but when i click OK nothings happens, seems that it doesn't pass any command. Using Joomla 3.4.3.
Rgrds,
Chris