Investigate problems with virtual files under Windows 7

[phdmakk]

Virtual / cached files under Windows 7 seem to cause problems when updates are installed. Investigate whether the installer or the updates can be adjusted to either flush these cached files or take them into account so that problems do not occur. Original report below:

Definitely there is a problem with that weird virtual files e.g. in "C:\Documents and Settings\Besitzer\AppData\Local\VirtualStore\Program Files\ETSI\T3D" where files are stored and kept and then they appear e.g. in "C:\Program Files\ETSI\T3D" and it is hard to get rid of them as you don't even see them in the windows explorer ...

[phdmakk]

There seems to be a common issue with application updates. The cause seems to be poor hacks for “improved” (or more accurately “improvised") security on Microsoft’s part to prevent users and programs from writing in Program Files. Theoretically, it shouldn’t happen as t3q/t3d are not designed or required to write anything there, but under some circumstances that may somehow still happen nonetheless..

-> #51 Set up a test environment to test against this for future builds.

For further information see:

​http://stackoverflow.com/questions/18059015/how-to-prevent-file-redirection-from-program-data-to-virtualstore-programdata

​http://installjammer.com/forums/viewtopic.php?f=5&t=1590

​http://stackoverflow.com/questions/20570754/get-real-path-of-a-log-file-stored-in-virtualstore?rq=1