Trying to process a stocklist, nothing happens.  Literally, you click the button to process the job, then nothing happens.

Likely due to the appliation SLDREPORTS.EXE being blocked from running.  This can be confirmed by trying to run it via Windows File Explorer.  If nothing happens, the file is blocked.  If you get the error below, then it's working.

C:\HES\Hydlist\Ver50\Programs\SldReports.exe

Should be fixed in SLD 50.24 update

During running your calculation, and after receiving the summary regarding your safety margin, you get a similar error.

You'll then likely get these errors, up to 3 times.

Be aware these windows may be BEHIND the calc window, so move the calc window out of the way if it looks like it has crashed or is hung; 

This key is already associated with an element of this collection Runtime Error 457,

User was using the ID PIECE HOLDER in the Mains tab Runtime Error 6 6 50.20.1

Runtime Error 6: Overflow    Calculating Head 1 of 24...

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

All the valves listed are red and can't be imported

Possibly due to changed or stricter UAC properties Run-time Error 339 339 n/a

Hydracalc

probably caused by units set up in registry no length