Cannot Load Mixer in Cubase 4.1.12

I cannot load the mixer (only one project is having this problem; all others open fine).

It appears to load all the stuff in the beginning fine, but when it gets to this screen:

“Loading Mixer”

“Loading Stereo Channel Out”

  • the blue bar fills up about 10% of the way and then freezes (for hours/indefinitely) – the hourglass icon makes no more progress.

That leaves me no choice but to alt/control/delete to exit Cubase.

Please help! Thanks!