I'm having an issue trying to route a pipe by using the drag + drop method.

When I drop the flange in the desired location the following error message appears.

If I try to accept the route I get this error message:

I have been through the 'Routing Files Locations and Settings' to make sure everything in pointing at the correct files, I don't know what else I can do.

My routing knowledge is extremely limited and I don't know much about setting up other configurations.

Can anybody help/advise.

Thanks