Maybe this can help everyone. Mike posted this in some other places:
An Important Message To Anyone Submitting Transactions to the CARS Program
Posted by
Mike Warwick on August 1, 2009 at 3:04pm
If you are having difficulty submitting transactions because the system freezes and kicks you out, follow this procedure:
Scan all documents and save to your desktop in a folder under the customer's name
1) Enter all invoice information and hit NEXT, do not add attachments
2) Save the invoice using the SAVE feature at the bottom of the page
3) Do not attach the addendums until you save the invoice
4) Add attachments one at a time and hit APPLY after each attachment
5) When all attachments have been added, hit SUBMIT
Adding all of the attachments at once causes the system to freeze and time out because the file size is too big.
I figured this out while on the verge of a nervous breakdown. I hope it helps : )