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

Starting the Pretty Pipe process, you get this error;

Unhandled exception has occurred...  eInvalidLayer

Unhandled Exception has occurred in a component in your application.

One of the identified items was in an invalid format

Unhandled Exception has occurred in a component in your application

Index was out of range. Must be non-negative and less than the size of the collection.

User drew own entities in FLEXPIPE Layer. That layer is only to be used by HydraCAD Unhandled Except. V50

Pretty Pipes requires line type TRACKS. This line type is missing from the drawing. Unhandled Except. v50

1. Bad PRETTYPIPES.DAT file

2. corrupt xrefs

3. Irregular linetypes in the drawing.

4. Bad Hcad_Toolbox.dll file eBadLinetypName V53.04

The cloud command does not finish correctly, when user right-clicks to close it. Cloud Command

1. Corrupt external data 2. 3D Head Block set wrong. show fittings HydraCAD V5x

Bad prettypipes.dat file

Bug with the new Flexible Hose Connections. Drawing with FHCs will get this error, drawings without will not get the error Unhandled Except. Dialog Box v50