Apple Lisa booting help

I recently bought a Lisa 2/10 with a faulty Widget drive very cheap in the local classifieds. I also aquired a external Profile 5MB drive a few months ago very cheap. I bought the adaptor so I could connect the Profile where the Widget would connect. Powered up the machine and it booted up to Macworks Plus. The floppy drive worked fine. So things went pretty smooth here at first. I then copied a couple apps such as disk copy 4.2 and Dart from the mothership site to the Profile. Disk copy had worked. But when I launched Dart the Lisa crashed on me with a Bomb error. I restarted the machine. Now when I boot it is in a endless loop. It goes to Diagnostic check as usual to "loading.....", Beeps once, then goes to the Macworks plus title with a happy Mac logo and then instead of going to the normal OS desktop, it goes right back to the diagnostic tests and passes all of them and repeats forever in that order!
Does anyone know the symtom here as it gives me no errors at all. Just a endless loop
Thanks
Does anyone know the symtom here as it gives me no errors at all. Just a endless loop

Thanks