ssb, have you tried another zip disk?
If you have the same problem with another disk, it is most likely your zip drive..

Odds are, you probably have a errored disk.

Also are you aware Roland has a Data Base Manager for the VA series..This allows you to organize and load a blank zip disk using a computer.

I just replaced my zip drive on my 8 year old Roland G1000...With care , the drives can last..

You mentioned cryptic lettering after you come out of lyrics window...This could be a sign of an internal battery going bad[they usually last ten years on average]..

If you have a reliable repair shop, maybe it would be worth while , to have them check everything out..