Sounds like the Multi Currency files didn't get restored.

They're the MC*.LD4 files located usually in either X:\ASP (if it was a Plus conversion) or X:\softrak\system.

You can figure out exactly where they are by opening the ADSPROF file (in data directory) using notepad. The 2nd or 3rd line will be "Currency=m:\SOFTRAK\system".

Restore these files to the same location on the new drive. If they don't have those files in the mirrored image, you'll need to re-configure the currency codes, rates and rate types.