Unhandled exception: eNullobjectId Application does not support just-in-time (JIT)

Trying run a calculation as stand-alone, or via AutoCAD/AutoCALC or Revit/AutoCALC, you get this error message;

Run-time error 339:  Runtime error 339  Runtime 339
Component 'MSCOMCTL.OCX' or one of its dependencies not correctly registered: a file is missing or invalid

It's likely a job without a pump works, but one with a pump crashes
 

Command Failure for External Command... Revit could not complete the external command.

Error Getting Available Subscriptions during refresh or while repopulating the HydraKEY dialogue.

When trying to transfer an Entitlement using the Hydratec Entitlement Transfer Utility ("C:\HES\Common\Entitlement Transfer\HydraEntitlementTransfer.exe") , after plugging in the USB to the "new" computer, you can't see a license to transfer.

The recipient does not show up the the window for licenses available to move (top right), but are visible in the bottom right window.

When attempting to run AutoLIST checkups and selecting a boundary, user gets an error similar to the one below; [Exception in fs_util.arx ARX Command] Unhandled Exception C00000005 (Access Violation Writing 0x9485ad10) at address 7720F86h OR Unhandled Exception in FS_UTIL.ARX and/or ADS request.

Field is too small to accept the amount of data you attempted to add. Try inserting or pasting less data. Runtime Error

Create 3D Hangers command did not created 3D hangers for the #01B hanger assembly but it did for all other hanger assembly types. #01B 3D hanger information is not in the DAT file. HydraCAD v50

When in the Pipe Model Settings window (Setup window in Navis toolkit), the user cleared the text box for "Layer Name prefix" Dialog Box Acad 2016+

Unknown n/a Pipe diameters 53+