I'm receiving the following error when running on my lab computers but not the computer that I programmed the studies on:

Subject 6, 10/4/2013, 3:11:28 PM, v2012.4.160, Initial Display: 1280x1024, 32-bit colour, 60hz or 16.67ms/screen
Subject 6, 10/4/2013, 3:11:28 PM, v2012.4.160, Session Display: 1024x768, 16-bit colour, 60hz or 16.67ms/screen
Elapsed Time: 1040ms, block -1, trial 37, stim 1, Error 9, Subscript out of range, on line 200, during FlipScreen of Form DDFullScreen
Subject 6, 10/4/2013, 3:14:41 PM, Finished. 1 Errors/Warnings.
The error message usually does not pop up until after the study is complete (but occasionally will interrupt the experimental session). On a positive note, all data is recorded and intact. The primary concern is that the error popup is disrupting the experimental session.

My current OS is Windows 7 for the 'programming' computer and Windows XP for the lab stations.

I attempted recreating the DirectRT .csv script from scratch on the lab computers but this did not resolve the problem. I've searched here extensively, but could not find a similar issue.

Thanks for any advice you might have!