I just this morning installed C3D 2010. Seems to work OK, but I've not really pushed it yet. Needed to do a very quick little cleanup of an item from previous work and I thought I'd just fire up C3D 2009 and fix it. But, I was no longer automatically logged in to the Vault and when I tried to log in C3D crashed. I tried a couple morte times and decided there is a bug here. It seems as though Vault 2010 client isn't complatible with C3D 2009. The docs says that it is. I'm wondering, does anybody else has this trouble or do I have a broken install?
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