1. Inserting a hydraulic reference point doesn't erase an existing ref point at the same location

2. New ref points in HydraCALC are not using the values of the HYD ref points.

When I use Pretty Sprinklers, all the nodes that were attached to my sprinklers when using All Ref Points disappeared. 
When trying to get them back by re-running All Ref Points, they don't reappear.

AutoCALC is creating extra node points where there shouldn't be.  In the image below, node 45 shouldn't be created as there's neither a flowing head nor a change in diameter at that point.

'extra node'

'extra ref point'

'extra reference point'

'refpt'

When I use Pretty Sprinklers, all the nodes that were attached to my sprinklers when using All Ref Points disappeared. 
When trying to get them back by re-running All Ref Points, they don't reappear.

Error placing Reference Points or Demand Area annotation... The 3D view ownerDBViewId is not locked.

Step 1a.1 - Error box - missing Pipe Type pointing to Ref 1 & Ref 2

can also be Step 1a.4

Dummy reference points cannot find the dummy ref point block in the drawing's block table. **Possible there's a missing registry entry** Dialog box 52.04

Step 1a.10 - "Attaching Node 2 Elevations" User ID Duplicated Dwg ID Dup for User ID

Duplicated hydraulic ref points

Bad ref point block Dialog box

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

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

Create 3D Hangers command did not created 3D hangers for the #01B hanger assembly but it did for all other hanger assembly types. #01B 3D hanger information is not in the DAT file. HydraCAD v50

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.

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

When trying to insert a valve type fitting from the parts tree, you get the error; 

Still!!! Block ### is missing.  Please insert manually.

However checking the database for the drawing file shows it exists.

All building dimensions are inserted into an different layer than the current one.

When opening HydraCAD, you get this error

Unhandled Exception...DAO32Server...

When opening Hydracad you get the following error:

Unhandled exception has occurred in a component in your

application. If you click Continue, the application will ignore this error

and attempt to continue.

Retrieving the COM class factory for component with CLSID

{44D62FAE-67A7-4131-BF38-489CDFE44738} failed due to the

following error: 80070005 Access is denied. (Exception from

HRESULT: 0x80070005 (E_ACCESSDENIED)).

When opening Hydracad you get the following error:

Unhandled exception has occurred in a component in your

application. If you click Continue, the application will ignore

this error and attempt to continue.

Retrieving the COM class factory for component with

CLSID {44D62FAE-67A7-4131-BF38-489CDFE44738}

failed due to the following error: 80070424 The specified

service does not exist as an installed service. (Exception

from HRESULT: 0x80070424).