I really appreciate the quick response. Last night my internet connection was lost (ISP problems) and was unable to download the patch you sent until now. That being the case, since I wasn't sure when I would be able to access the file, I opted to restore my laptop from an disk image that was taken just 18 hours prior to getting the corrupt file message. Fortunately, since yesterday was Saturday, I didn't do any work on the laptop so restoring the image did not cause any lose of data. After the image was restored (which thanks to a new SSD now only takes 40 minutes instead of 3+ hours), I ran SFC and "Windows Resource Protection did not find any integrity violations" so all is good. I have an idea which program and which operation caused the error but I cannot confirm it at least for 45 days. I saved the file you sent just in case I get a corrupt file message and it happens to be the same file. Otherwise you might hear from me again. :) (though I hope not)
Regardless, I really do appreciate the time you took to respond to my post and how quickly you did.