connector error

Hi,

 

In several calculations my students are doing we get this error:

 

"Pin/bolt/bearing forces are not available due to non-existent connectors or changes in the connector faces".

This message pops up when they are doing a pin/bolt check to see the FOS of the connector.

 

In the assembly you can see all the parts but the connectors are not showing.

 

I tried to check if all the faces were selected. Deleted connectors and put them back again but nothing seems to work.

 

Can this be solved by refining mesh around these connectors or has anyone got an idea to solve this.

 

 

thx

Theo