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Revit Based HydraCAD (Ribbon/Toolbar/Location)

Button: Couplings Function: Add Couplings Error Type: Command Failure for External Command

Description:

Command Failure for External Command... System.NullReferenceException

Solutions:

Cause:

Unknown, but when trying to add couplings, the error shown above is recieved. 
Solution:

Cut in the couplings from the other side of the run of pipe, or if you'd like it on the end that gives this error, manually place the first coupling spaced at the distance you'd like. This can be done by drawing a detail line at the distance you'd like, and inserting the first coupling using the break couplings over line option. 

If you need further help on how to do that, this proccess is deatailed in a video located here: couplings video.
Updated: Sept. 19, 2022, 2 p.m. Created: Feb. 21, 2022, 1:58 p.m.