TRNSYS16 (IVF-SAM) 01DEC11 ERROR

I am running SAM from python. I've set it up to run successfully on a Windows machine using the Dec. 2, 2011 version of SAM.

I recently created a new project in a separate directory on the same computer. Now when I run the same python code SAM generates the following error:

TRNSYS16 (IVF-SAM) 01DEC11
ERROR IN '0': ICALL= 1001

I've moved all of the *.dll support files from the directory with the original python code to this new directory, but that does not seem to make a difference. I even verified that even if I use the exact same weather file between both the python code that calls SAM in the original directory and the python code that calls SAM in the new directory, SAM will still only work with the python code in the original directory.

Any thoughts?

-Andrew