Solved
updates going to C drive instead of D drive
so I've installed SWTOR on my D drive but for some reason all the updates (at least thats what I'm guessing) seem to be going onto my C drive which is pretty much full and I had to delete some stuff ...
This should point you in the right direction: https://support.microsoft.com/en-ie/help/4026616/windows-disk-cleanup-in-windows-10
