When running a Darcy-Weisbach calculation, after changing your k-factor, the program will not ask to Modify K-Factor anymore

The calculation method you have chosen is only a legal calculation method under NFPA 13 rules for anti-freeze systems and requires modified k-factors

Have the k-factors already been modified

When clicking the Calculate button or the OK button from the Pre-Calc Questions window, you get a Runtime-error 5,

Run-time error '5': Invalid procedure call or argument

When editing the cells, you receive the error Run-time error '6', Overflow

When hitting Save, Refresh Drawing or Calculate Results, user gets a Run-time 9 error. AKA Subscript out of Range

When trying to open a calc job using [File|Open], you get a Run-time error '62': Input past end of file

When opening HydraCALC SIZER, you get the error;  Run-time error '53': File not found

Dup Equiv K / Sys Pipe Node

The View button that appears after running a calculation does not do anything

Or you get the error; C:\Windows\system32\Write.exe

'file name asked for does not exist!

No error but the calculation process takes a very long time and is slow.

The process hangs and usually the RAM runs up to 100%.  You'll likely hear the computer's fan rev up.

Auto Adjust Fittings defaults to unchecked.