I was using Rhinoceros yesterday and saved one of my documents before powering off. I use Rhinoceros 5 32 bits because 64bits is too much for my laptop at the moment. Next time I opened it I could only see texts and some hatches. And it’s not that layers have disappeared, in fact, objects are there when I select the whole area but they won’t appear in yellow. I was wondering if I have to uninstall Rhinoceros and reinstall it or maybe I changed some configuration. Curiously I can open it with 64 bits.
Are you running the same Service Release of RH5 32-bit and 64-bit? (and which SR are you running?).
Also, please post a screenshot of your OpenGL options under Rhino Options > Display > OpenGL.