save -bs PlotName FileName Width Height

Actually, the frustrating part is that this command does seem to work, to the
extent that the graph does in fact save properly, but then I get a `Command
Error' message, and thus the rest of the script does not run. I have used this
command all by itself in a script, and have still had the same problem (again,
the graph does save as a bitmap, but I get an error message). Does anyone have
any idea what might be going on?

The problem with the save -bs WindowName FileName Width Height was discovered only recently along with a similar problem with the file -c FileName1 FileName2 command.
This is the way to work around the problem until it is fixed:
Create a text file with the following:

[SaveBitmap]
save -bs %1 %2 %3 %4;

[FileCopy]
file -c %1 %2;

and save it with an OGS extension into your Origin directory (such as UTIL.OGS). You can then call this file and pass the various parameters as needed:

run.section(util,SaveBitmap,Graph1 image.bmp 400 300);

and here is the syntax for the new file copy:

run.section(util,FileCopy,c:\origin\origin.ini d:\backup\origin.ini);