Revit could not complete external command.    Autodesk.Revit.Exceptions.CorruptModelException

While calculating a job with (i) internal diameters only and (ii)pump AND city water supplies, the user gets an error which says, "Error in MiscFunc.exe|PumpCalc|Form_Activate 62 - Input past end of file" Runtime Error 62 Miscfunc

none - negative flow through a looped system with check valves or backflow devices. direction wrong way hydcalc.exe

Error Message - The duct/pipe has been modified to be in the opposite direction causing the connections to be invalid. The referenced object is not valid, possibly because it has been deleted from the database, or its creation was undone.

Run-time error '-2145320959 (80210001)':

Invalid Selection set Name

Clicking Help|About HydraCALC will give a Run-time error 453 Can't find DLL entry point GetLockNum in HydexVB3.dll Runtime 453 Miscfunc

While attempting to view the graphical pressure display (or water supply graph), the following error comes up.

Run-time error 9 Subscript out of range Runtime Error 9

This job has gone 200 passes... then error at Step 1a.9 attaching elevation of ... to reference point MTR Step 1A.9, 200 Passes

"This job has gone 200 passes or more without balancing" 200 passes 200 n/a HydraCalc v50

Missing first outlet