The last thing I want is for anyone to feel taunted. 
I just added this feature to the next update, which is due in a week or so. If Inquisit is unable to save the data to the location designated by the script, it shows the following message:
"Inquisit was unable to automatically save the data. Click OK to manually save the data file to your local computer. Contact the researchers for instructions on how to send the data file to them."
Then it pops up the Save As dialog allowing the user to save the file to their local computer.
The next update is in testing mode now, so we'll hopefully get it out shortly.
Sean