When starting the Pretty Pipes command, you get an Unhandled Exception error including 'Could not find a part of the path'

Another error may mention blockoffsets.dat

When opening HydraCALC, you get this error.

Startup error

An error has occured during startup. The decimal separator & digit grouping symbols are not set correctly in Control Panel! The digit grouping symbol must be a comma!

Command is run, but nothing appears to happen. May get Nil message

Double-Clicking on a riser nipple, or using the Edit Riser Nipple command (ERN) briefly displays the edit riser nipple dialog, which then closes

This Calculation has gone 200 passes...

When starting the AutoCALC process, you get this error;

Could not find fitting match for Pump Only/Test Point Please check!!

You also see an Accessing Database window with a partial green progress bar.

No Operating Heads of Flows Found!!  Please check...

During the AutoCALC process, it gets hung up at step 5a.3b. 

Re-Ordering Pipe Paths - Phase 2

During the install of HydraCAD V56/57/58, the user is greeted with the message below.  Following the both sets of instructions of opening and closing AutoCAD, and running a repair of AutoCAD do not make a difference.  You'll still get the error message.

V56 = R23.X
V57 = R24.X
V58 = R25.X

V57 install will say;

Neither AutoCAD 2021, 2022, 2023 nor 2024 found (missing registry key:

HKEY_CURRENT_USER\Software\Autodesk\AutoCAD\R24.X).

Please install it before re-running this install

Step 5a.3 "Attaching Elevation of ~ to Node ~~~~

Step 5a.3 "Calculating"

"The specified remote node does not have a k-factor. Please fix your input."

"Calculation failed for unknown reason"

Step 1a.1 - Error Box - User ID Duplicated

Transfer to HydraCalc - Step I1a.10 System is now 'Attaching Node 2 Elevations error occurs, please report both the step number and the step description to support! Error Display Error Type User ID Duplicated Step Ref 1 Ref 2 Ref 3 I Ref 4 1a.1