Need help with assembly connections

[MK_6985559]

I have an assembly that for the life of me I can't figure out what the issue is.  For starters I am using Creo 6 and I have an assembly that contains 3 parts in it, with 2 of the parts being assembled using mechanism constraints.  The two assembled parts are completely independent of each other where one is a ball connection and the other part is using a slot and planar connection.  When I try to drag either of the components with both parts unsurpassed I get the error message that "the mechanism could not be assembled since some mechanism constrains have not been satisfied".  However if I suppress either one of the two components I can drag either one with no error messages.  Again both components are completely independent of each other so I can't figure out why I am getting this message that the constraints have not been satisfied.  I've attached the files for anyone that would like to 

I would greatly appreciate anyone that can help me understand what is going on.

[tbraxton]

Check the DOFs that are free in mechanism. You likely have a conflict with the constraint sets (redundancies perhaps). Do both sets establish a common ground body for kinematics?

Take a methodical approach when adding the constraints and flex the model after each addition. Note that you can convert between joints definition and explicit assembly constraints which can be useful for de-bug.

[MK_6985559 · Accepted solution]

I figured it out.  There was an issue with the plane that I had the point and curve for one of the components not being co-planar. It was very small and I did not realize I had designed it this way.  Once I fixed the co-planar issue I was able to get rid if the error message.