For Windows 32 bit machines, Navigate to
c:\Program Files\BurnSoftor for 64 bit machines
c:\Program Files (x86)\BurnSoftRight Click on the
My Gun Collection Folder
Click on
Properties
Click on the
Security Tab.

Then Click on the
Edit Button
Click on the
Creator Owner Username

Then in the Box Below it click on the Check box under
Allow for
Full Contol.

Repeat with The
Administrators and
Users to give them full access as well
Once you are done click on
Ok to close out the windows and apply the settings.
Then try the upgrade again or to see if the hotfix application freezes up.