The following example in Stata 16.1 on a PC and Stata 12.1 on a Mac produces the same error:

Code:
sysuse auto
scatter price mpg
graph save A
will return

Code:
File A.pgh could not be opened
This simple code is to reproduce an error that now is returned when I run a similar do-file. I know this syntax used to work because the graphs in my paper were made using it. Does anyone know why this now fails to save a temporary file called A.gph that I can call later with graph combine?