I should have mentioned that I tried debug mode, which doesn't seem to output anything when I get the error:
runPlugin: ij.plugin.Commands open
actionPerformed: time=1275845373781, java.awt.event.ActionEvent[ACTION_PERFORMED,cmd=Open...,when=1275845373781,modifiers=] on menuitem0
openImage: "tif", I:\Data\Grant\100602\rot_cy35_alone_0.tif
Here is a screenshot of the error... so I open the file (either through file>open or through windows explorer's context menu), the error message appears, I click OK, and nothing happens.
Here is debug output after successfully opening a file that is identical but just smaller (with less pages).
Thanks for any and all help!
Grant