I've got some very old (the initial versions of some of them were written in the late 80's) C++ programs that not only are not 64-bit, they were initially written when the standard Intel processor still used segment registers. These programs all work perfectly except for one small constraint (coming up) and i use many of them on a several times a day basis so they are important to me, and I really don't want to mess with their code much less re-write them. The small constraint? Some functionality is broken when run in a 64-bit TCC session. (I won't go into the reasons why here, it's not that I'm trying to be mysterious, it's more that it's somewhat esoteric and really completely besides the point.) So I generally have a 32-bit TCC session running on this 64-bit system in which to run these programs. So now on to the problem: In installing the latest 32-bit versions of Take Command/TCC (again, in parallel with the 64-bit version) the installation always fails with the following error: Could not set file security for file 'Y:\Config.Msi\'. Error 3. Verify that you have sufficient privileges to modify the security permissions for this file. Now I'll note that I had a drive Y: in the distant past (I do no longer) and the install process can not even successfully start unless I subst Y: to C:\ (I believe I need to do this both in Administrative mode and User mode) which I consider to be only a relatively minor problem. But even after doing that and changing the drive letter to "C:" in the "install to" location I still get the above error, and the install program rolls everything back. The bottom line result of this is that my 32-bit Take Command/TCC is rather old ("Ver" reports TCC 14.02.38 Windows 7 [Version 6.1.7601]) which sort of bugs me (no pun intended). Any guesses as to what's going on here and what I can do about it?