Conflict when joining 2 rigid bodies

[Anonymous]

I'm relatively new to Fusion 360 & have been designing a model Hit & Miss engine. I have attempted to follow all the 'RULES' while designing this model. When I try & join the Hopper/Cylinder & Bearing blocks rigid group (which are attached to a Welding fixture) to Base rigid group, I get an error message 'Selected joint type will result in conflict'. I can't for the life of me work how to do this join without a conflict. I have attached a screencast as well as the .f3d file. I would really appreciate any help with this problem. Thank you. Kind regards, Pete.

[davebYYPCU]

Far as I can tell, all those visible components are locked or joined and cant move, so adding more rigidity is where the error comes from, 

Screencast not working, 

Might help....

[TrippyLighting · Accepted solution]

You are double dipping in quite a few places when joining components.

You create rigid joints between individual components in a sub assembly and then create a rigid group of the whole subassembly.

 This is one example.

[Anonymous]

Peter & Dave, thank you very much for replying to my post. I now understand. It worked perfectly after removing many of the rigid groups. Apologies for the screencast not showing. I'm not sure why - it was 'pending' for nearly 2 days! Anyway, thank you both again. Regards, Pete