Are you building locally? I assume so, since you are asking here, and not in the PGB forum.
However, if you're using Phonegap Build: is your zip file available online, somewhere, so we can have a look and suggest a solution?
I have placed it in an FTP server. I think that you should be able to access the files without needing access to the FTP:
Index of /lindseygreene/FundMobWeb and then it's MobilePetGroomer.zip
If you can't access that, is there another way that I can get it to you?
Well, if it's 'MobilePetGroomer.zip', then:
a. you don't have index.html (just Index.html)
b. you don't have a config.xml
c. you don't have both in the root directory of the zip file.
So indeed, the error message is correct.
OK, I changed the Index to index and that worked. Thanks for your time!!