I will try to assist. Are you using the SatoshiRoller Android app or the Desktop edition?
a) If you mean the Android app, how is it that you're copying the wallet file? Did you use the Backup function in the menu?
b) Or, the Desktop edition v1.0.1 creates a SatoshiRoller.backup file (similar to Android backup file).
In either case, the backup file contains your private key(s) in wallet import format. If your SatoshiRoller wallet is not working, you can import your private key into another client (like bitcoin-qt) to recover your funds.
The download link download 1.0 beta, not 1.0.1