blank .que files

Hi,

Currently, I have 3 networked computers - the main one has ML 2010, and the other two have 2008. All have Windows 7 installed. When I attempt to open a .que file in Experiment Editor on either of the two computers with ML 2008, the window is blank and it looks like nothing has been programmed. However, I can still open and view these files on my main computer with ML 2010. Does anyone have any idea why this is? Might it be a problem with incompatibility between ML 2010 and 2008?

Thanks for your help!