When attempting to process a stock list, nothing happens and HydraVIEW doesn't open.

You can test this by trying to manually open stand-alone HydraVIEW.  Go to the Windows START button, scroll down to the letter H, select Hydratec v50 Software, then select HydraVIEW.  It should open to a blank job, but if nothing happens, see below for the possible solution. 

You can also manually attempt to navigate to this folder, then double-click HydraVIEW.EXE then double-click it.

"C:\HES\Common\Ver50\HydraVIEW.EXE"

If stand-alone HydraVIEW does open, see this HydraCARD;

Runtime Error 91: Object variable or With block variable not set Runtime Error 91, 12/16/14 - JB

When opening HydraCALC, user gets Runtime Error 457 "This key already associated with an element of this collection"

Runtime 457

Run-time 457

Duplciated K-Facotr, list(s) Node 1 Duplicated K-Factor

Unknown Run-time error 3163 50.20.1

When trying to run Spacing and Layout, this error appears. Revit could not complete the external command... System.NullReferenceException

Also could encounter this error:

Input past end of file Runtime error 62

A-Your printer is not correctly configured in the HydraLIST Printer Setup. B-You don't have a printer installed from the Windows Control Panel. C-Your printer isn't online. D-Your printer is jammed or out of paper. E-You tried to print a form to a printer that can accept only text. Runtime Error 482

Glyphs used to indicate the component type (Line/Main/Armover/Underground) that riser nipples are to be listed as remain on drawing even after command is closed

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