OK-- After finally getting a new drive for my PB G4 (the internal had gone bad SMART status failing), I am tryign to get PM up and running again. I have downloaded and installed 5.1 and registered it.
Then I copied over my powermail files and launched, holding down opt&apple to get the PM first aid. I checked all the options, and it ran through everything fairly successfully until it was almost done with "Checking COnsistency"... at which point it hung for a while and then gave me: "An error occurred while opening user's files Uncaught exception type" any help much appreciated. M