I am trying to move it to C: and it has space but it wont move anything past swtor_main_art_creature_npc_1.tor so now I will test memtest.
I am presuming you have one hard drive and 2 petitions on the same drive
The line above are you saying that when you tried to move the files from D to C it failed ?
Does this fail on a reboot without trying to run swtor at all ?
Please confirm if this is what is occuring