It sounds like you have an installation problem. I do not think it is specific to a RED 5 version number. I suggest that you contact our support lines at 888-77-BORIS or email at support@borisfx.com and allow our support specialists help you re-install RED 5.05 – our latest update.
There was a change in 5.03 to work around a problem with large effects data stored with the Vegas host. Most normal size effects should hot be affected. We investigate tomorrow (Monday) and report back on this thread.
Call our support lines in the morning. I can’t say why eps files got unlinked but I’m sure they will be able to figure out how to get them back. Sorry about the trouble.
There is a separate install option for Keframe Library. Perhaps it’s not turned on when you install the product? On Mac it lives in App support folder under Boris FX. Contact our support if you still can’t find it.
the cube is stretched to match video aspect ratio so that you can map a whole frame on it’s side without distorting the image. To make a perfectly square cube you need to do some math and scale X and Z dimentions to match the Y dimension. In your case I beleive the magic number is 56.25%