So I'm installing the patch and get the CMD window and all, I press [I] for installation and it fails saying:

Error: error loading [Arcanum.exe]

.
.
.

Error: Unix.Unix_error<20, "stat", "arcanum.exe>

I have win7 .

Please help :)

High_res maps and high quality music also claim to not have installed properly :(

I've got this error due to incorrect path specified: the game was installed in c:\games\arcanum\arcanum (instead of just \arcanum). Try double-checking the path to the actual arcanum.exe file.