The lines or mains do not get the pretty pipes applied. The layer is all lower case. Lines or Mains missing

Duplicate objects are on the drawing and Acad can't write an identical object to the hash table. n/a Dialog Box 53.01 r2

unknown, this shouldn't be happening n/a Navis model n/a

1. there are 3d solids in the drawing that have no geometry. Persistent Model

When opening AutoCAD, you get an error saying "a software problem has AutoCAD to close unexpectedly"

Upon reviewing the file it's crashed on, it shows HCAD_MAKEFIGHANGERLIST as the culprit

After opening AutoCAD and a drawing, you have a dead area where you can't draw nor does anything display.  Usually next to a compressed palette.  Note in the image below how the crosshairs do not extend to this area.

Running HydraCAD commands do not work in one drawing, but will work in a different drawing in the same session of AutoCAD/HydraCAD.

Inserting a pipe dimesion gives an 'unknown command' message.

NOTE - If you are getting this message when opening AutoCAD/HydraCAD by using your desktop icon, see HydraCARD #260.  

When opening, closing, or saving a specific drawing, you only receive this error message and not a HydraKEY security error with the golden X. 

After AutoCAD opens, press F2 to view the command prompt, see if the text below appears.  This may or may not be related, IDK.

Is 2024; error: no function definition: PRINTEM

You will likely this message as well;

All of the possible directories for storing temporary files either do not exist or are readonly.  Please correct this situation before running AutoCAD again.

Drawing looks strange, piping looks hollow and sprinkler heads a little off and Acad background looks greyish/grayish.

Drawing also seems to lag when panning, processes take longer

When inserting a listing tag on a pipe, you get the error, "Invalid color number"