Last night I saved a zproject out it was about 600mb included 4 subtools (my computer has been ok with this before) and now when I go to open the project I get the message - Error has been encountered while trying to load a Tool. Loading has been aborted.
I have now tried to load the tool on two different computers. No luck. Same error message. I tried default settings then I tried increasing max poly to 40 million and compact mem to 4096 (i have 6 gb of ram) still no luck. There is about 40 gb of free hard drive space. Intel xeon e5630 quadro fx 3800
Any ideas how to recover this? 
Thanks
Darrell