When opening HydraCAD, you only receive this error message and not a HydraKEY error with the golden X.  If you receive a HydraKEY error, search for the linked HydraCARD in that message box as it takes priority.

Security Error: One of the following conditions is possible

HydraCAD is unable to function under these conditions.

• Lock database needs updating in HydraKEY
• Accounting flag on your account
• Hardware lock not plugged in
• Extra ACAD.RX file found in folder in Support File Search Path
• Sentinel driver is missing
• InstallPath registry item set to wrong drive

After AutoCAD opens, press F2 to view the command prompt, see if the text below appears.  If yes, see solution 1.

Could not find file HCAD_ENV.INI

Is 2024; error: no function definition: PRINTEM

When trying to Import from the latest Toolbox, the toolbox does not load properly causing Revit to hang, and you cannot close the window.

Missing names or values of Sprinkler or Pipe properties in the Properties menu, as shown below.

When trying to size a pipe, the units show up as millimetres/millimeters (mm) instead of inches or the values for half show up as a backslash

When selecting the menu [Help|User Manual], you get the error message;

Fitting Definition Trying to Read PDF's

Error while trying to open Acrobat Reader.

Install Acrobat Reader and try again.

When trying to open HydraCAD after a recent install, you get this error or one similar to it;

"Missing shortcut", Windows is searching for acad.exe.  To locate the file yourself, click Browse.

AND

Problem with Shortcut - The item 'acad.exe' that this shortcut refers to has been changed or moved, so this shortcut will no longer work properly.

Nearest match based on size, date, and type:

Do you want to fix this shortcut to point to this target or do you just want to delete it?

"AutoLIST Failed!... Please run Listing CheckUps"

This message is shown when running the AutoLIST process, but checkups didn't find any errors AutoLIST Failed

When attempting to open HydraLIST after a fresh install, you get the error;

[[ Error Openning (sic) Data ]]

Microsoft Error 53: File not found

The file ??? was not found where specified

"filenamehere is missing and needs restored before before HydraLIST will open"  🤦

Running calc displays this error:

Please confirm your Remote Point reference point has a k-factor or flow and pressure

HydraLIST process freezes at Processing Cover Page Report - Optimizing pipe

Or freezes at processing pipe sketches

Or at optimization