Sage 50 Accounts

I have a customer who is currently running SAGE 50 accounting, when she runs the trial balance report in Excel via a plugin, she gets the following error..... Any suggestions welcome.

Recently we have had a few cases where only one sales order is highlighted to be printed but when print is clicked, multiple sales orders print. This only happens on one particular computer on the network. We have asked Sage and they don't know the…