Extra line of input was entered into the VPUMP.DAT file found here; \HES\HydraCAD\Ver50\Programs\3DFTGS Unhandled Exception Insert Pump n/a

No error, pump just doesn't insert 

Revit could not complete the external command... Name contains illegal characters

Discharge and or Suction inputs were typed in and not entered via the pull down. input new pump

Pump is in water supply but no reference point PI

Command Failure for External Command... ...System.IO.DirectoryNotFoundException

Revit could not complete the external command.... Details: Name must be unique... At HCAD_Revit_Tools.CAD3.Insert_Pump.Go

Runtime Error 62: Input past end of file

After running an update to 50.54, user is getting this error when trying to add a fitting by right-clicking the fittings cell, a dialog box pops up saying,  May happen with Pipe Schedule and adding a Pump as well.

File to load paths and Dirs.(AND STRING CONVERSION)
CommandLine... yadda yadda yadda

System flow demand exceeds the maximum rated flow...

Command failure for external command ... System.IO.FileNotFoundException ... File name 'AWSSDK'

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...

When raising to 3D, you get the following error;

Error inserting to block table HEAD#/HH## to head dictionary

Running HydraCAD commands do not work in one drawing, but will work in a different drawing in the same session of AutoCAD/HydraCAD.

Inserting a pipe dimesion gives an 'unknown command' message.

When inserting a flexible sprinkler connection (FSC) after its setup, you get two error messages

Error importing hose over size percent, check your FSC dialog properties

Setting Over Percent to 10%

Error importing hose under size percent, check your FSC dialog properties

Setting Under Percent to 20%

Clicking OK in each window will allow you to continue and insert the FSC detail

When starting the process to insert a Flexible Sprinkler Connection, you get the error message above;

An error occurred reading the FSC-Selections.txt

When trying to open the dialogue box to define a Flexible Sprinkler connection, the following message box error appears. 

Could not find file; FSC-INSERTDEFLINE.txt

When trying to insert a sprinkler head, this window pops up;

Pick head insertion point. Pick any point besides endpoint to break into pipe. Can't find file in search path

*Invalid*

Error 52 trying to insert fittings for calculations. Error 71 disk not ready error trying to use the sizing button. error 52 or 71