On the computer where you attempted the transfer, can you..

- Run ProSeries

- Select Help -> Send Logs

- Email the resulting logs, which were saved to your desktop as a .zip file, to proseries_engineering@intuit.com. 

I'll take a look - maybe in one of the logs there will be information on why it's not transferring.  

Also by chance you have multiple firms associated with your CAN / license?