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

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

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

Missing or frozen layer Unhandled Except. v50

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

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.

When starting AutoCALC the v50 Fuel Gauge stops at step 1a.4 plus you get a Run-time error 6; Overflow 

Working on pipe from Node ### to Node ### with a fitting of "?" and a diameter of / pipe type of 0.5 / SCHED-40 where the pipe id = ### 

The "####" values represent handles.  It is recommended you use the FINDME tool to find the coordinates of the handles, this will help narrow down the cause of the error.

May also see a Runtime Error 5, "invalid procedure"

When performing AutoCalc, the following error is displayed.

Unhandled Exception... startIndex cannot be larger than the length of string.
(Parameter 'startIndex').

After clicking the Start AutoCALCs (SAL command) button but BEFORE the AutoCALC Setup window, you get the 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.

The input string '1◆' was not in a correct format.

Keyboard alias "SAC"

After clicking OK in the AutoCalc Setup window and just before the process begins, you get the following error messages;

Problem updating your Hcad_env.ini file.  /n Will try to rebuild file. /r Pick OK then Restart AutoCALC

Your Hcad_env.ini file is possibly corrupted.  This calc will not continue