Many thanks, I'll give this version a try and report back with the results.
UPDATE: I installed the v0.6 script, and in the Prefs I configured the FoldersConfig section so that it pointed to my test folder. I then removed the folders.xml file from my test folder, and gave the new script a try.
It did not turn on the viewer when I entered my test folder. I double checked to make sure that I had the 'ShowViewer' style still active, and it is.
To further test it, I went back and configured the FoldersConfig again, and removed the path to my test folder, so that it was just blank. I put back the folders.xml and tried again, and this time the viewer did open, just as in the past, but still at the small size.
So, there perhaps might be a small issue with that section???
Also, I ran across this thread while searching for solutions. Maybe it will help?