Troubleshooting: Can't Create an Additional Binder

Condition

I can't create an additional binder. When I try selecting the addendum start edge of an additional binder, it doesn't work.

Cause

On the additional binder, you tried to select an addendum start edge that is was already selected to create an existing binder. Binders cannot share addendum start edges.

Remedy

Select an addendum start edge on the additional binder that wasn't already selected to create an existing binder.