Ok, I don't have windows 7 so I am working in the dark here,
I think you are anable to create files like text documents in the program directory because of a thing called UAC.
User Account Controls. it was introduced in Vista as a sort of fool proofing
to prevent people who don't know what they are doing from messing up their systems.
Whilst it is annoying when trouble shooting games mods. It is proberbly a good thing to have.
If your computer is yours alone then you might try deactivating it
like this.
Otherwise it maybe wiser to shift the whole CFS2 Folder into your home folder where you should have file writing priviledges.
Your "home" folder is the one that has your logon name in C:\Documents and Settings
CFS2 is not dependent on the windows registry and so it should run from anywhere on your system or network
Some ancillery programs and self installers do look to the registry to find where CFS2 is though, so if you do move it they will need to be told where it is.
The question is will UAC allow you to move CFS2
Are you able to rename your CFS2 folder where it is?
All this is by the by
I have run some experiments on my own install and am unable to stop MB from loading by deliberatly messing with mdlnames.txt or airbases.dat.
So Reinstate your original mdlnames.txt
We have to go back to square one.
I presume you knew all the stuff you needed to install by following MR s readme,
did you add
anything else as well or just what it says in the readme.