Error placing Reference Points or Demand Area annotation.: System NullReferenceException: Object reference not set to an instance of an object. nodes reference finish

Unhandled Exception... Details... System.NullReferenceException: Object reference not set to an instance of an object. at HCAD_HUI.frmPipeTypeSchedule.cmdContinue_Click

Error placing reference points or demand area annotation...... System.IndexOutOfRangeException: Index was outside the bounds of the array "Make Pipe Type Info Array String"

At end of AutoCalc steps, Path not Found, HydraCALC does not open

Step 2.3 - Can also show up as This Calculation has gone 200 passes...

No pipe types in the Pulldown for pipe types. Entry is blank, and the continue button is grayed out. 

Fitting Exchange No replacement fitting name for...

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

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

can also be Step 1a.4

This Calculation has gone 200 passes...