Run-time Error 5.... Hangs at Step 2.4c (Could also be Step 1a.9 or 2.3)

When trying to place a hanger you get this warning.

"There are identical instances in the same place. This will result in double counting in schedules."

"AutoLIST Failed!... Please run Listing CheckUps"

This message is shown when running the AutoLIST process, but checkups didn't find any errors AutoLIST Failed

Step 2.3 - After one pass through calculations Miscfunc hangs....

Also possibly "Hydraulic Engine not responding" and a "Runtime Error 62 input past end of file"

When starting AutoCALC, it stops in the v50 Fuel Gauge at step 1a.4 - Calculating Total Lengths. 

Working on the pipe from node #### to node #### with a fitting string of ...

May be followed by a Runtime Error 13 or Runtime Error 5

Launching AutoCAD causes a hard system crash as it loads some HydraCAD plugins, the last one seen is HCADMainBase.arx. The machine crashes every time — it does not reach the AutoCAD interface. When HydraCAD is uninstalled, AutoCAD launches and runs normally with no crashes.

You are not currently authorized to use this Hydratec Product.   Lack of authorization.

When placing clevis hangers or adjustable ring hangers on a 10-inch pipe drawing in Revit, the hangers render incorrectly with missing 5/8 rods.

When trying to add reference points, none are added and this error shows:

Revit could not complete the external command... Object Reference not set to an instance of an object.