[rules-users] User Experience with multiple users in Guvnor

I have a question for users out there working with Guvnor. Do you have more than one user working on rules within the same package at the same time? How are you handling versioning and testing, especially if the changes are not going out at the same time? We've been experimenting with Guvnor (5.0.1) and multiple users and we're finding that if user A gets something that parses with an error, it carries over to all the other users when they attempt to validate their rules. This has been confusing because the error is not with their code but with something else completely (like a Function with an error, and they're working on a rule). It seems to us that multiple users working on the same package in Guvnor would require a lot of coordination. Anyone have some wisdom or lessons learned you'd be willing to share?