Have anyone run into this situation.

Normally, I can open the file for CS4 from Lightroom2. I just right click edit in CS4, and then, CS4 will launch and the file will open.

However, I have one folder, when I did the above, CS4 launch, the file flashed across the screen, and then, there is no file open. I can open the file in question via bridge, from CS4 directly or from windows, just cannot via Lightroom.

I checked other files on different folders, they open normally.

Any ideas?