I'm using the Moonlight skin entered into the competition a few months ago

http://www.dotnetnuke.com/Community/E... 

I've edited the source images to something that will fit in my design, and have repackaged the file. However, when I go to install through the extension wizard, after clicking 'next' at the "Choose Your File" screen, I get the error message:

A critical error has occurred. Could not find file 'C:\website\httpdocs\Install\Temp\vqozcqsw\License.txt'. 

displayed on the Extensions screen. I've triple-checked the new zip package, I've re-downloaded the source and copied the new images right into the respective folders. The names are the same as the source images. I haven't touched anything else in the package that I'm aware of, and, yes, the License.txt file is there. I've even deleted it and made a new one, to no avail.

What am I doing wrong? I'm about to start pulling my hair out!!!