ok - well I have managed to download all the FULL Cubase 7 and 7.5 ISO images, and HALION sonic setups.
I removed 7/7.5 32-64 bit versions, used crap cleaner, deleted all the preference folders, etc… then installed cubase 7.5 32-bit on a clean separate hard drive partition.
the result is, even though i still get the image processing errors in mediabay, and in groove agent se4, as well as the dreaded error when i try to drag/drop patterns into the project window…
runs much more stable, and even things like VST connections shows up the correct inputs, loads of little things seem to just, run…well… faster…
I also did remove all .net framework setups, and downloaded the latest 4.5 .net - hasnt made any difference.
for those that are experiencing the LoopMash FX white screen, the above help may work for you, so try it…
if anyone has the same drag/drop problem in GA SE4 as me, please let me know… and if you manage to solve it, again let me know ASAP!