No, you don't...there is no "Lightroom 3.3". There is a LR 3 BETA and there is Lightroom 2.x (if you are running 2.3 you seriously want to update to the current 2.5 if not the RC 2.6).
As for why you can't open the secondary file, could be several reasons starting with a corrupted file. Can you open the first TIFF into Photoshop from Lightroom? Are you absolutely sure that when you did a Save As that you spec'ed saved path and TIFF parameters correctly? The fact that the file is not showing any dimensions kinda indicates a corrupted file.
Thanks for your reply,
Sorry about the typo, I am actually using LR 2.5. Guess that proves we can not be sure I did things exactly as I remember it.. :~)
No, I can not open the file in photoshop either directly og from LR. However, I can print it from LR.
No, I am not absolutely sure I did a save as correctly - but I have tried a lot of different save as options and combinations on a test file and not been able to replicate the error.
By the way, I am more curious than desperate to save the file. I can always make a new one from the raw file.
Christopher