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Sorry that I did not have time to go through the above recommendation.
But what I did today was to install Scanner into another office PC, which runs Windows 7 Pro 64bit AND another Trend Micro Antivirus Maximum Security.
Again after installation, first, the computer hanged, the whole PC slowed down, subsequently I had to restart the PC. Secondly, the preinstalled Skype went into IO Conflict, which was not the case before installation of Scanner.
So I uninstalled the trend Micro antivirus again. Reinstalled skype and reinstalled Stablebit Scanner. All appeared to work again.
When I go to Service.msc, with the antivirus, the stablebit scanner did not appear at all. After uninstalling the antivirus and reinstall the Scanner, it appeared in the service list and does its work.
I tend to conclude that Trend Micro Antivirus seems to seriously affect the Stablebit software for sure.