Hi Shana,
I expect the error to occur because of the release package structure (the mpk file). I usually have the following contents:
Since the structure of your mpk is completely different, I would try it with the above structure.
Could it be the version? Unfortunately in your screenshot I can not see what you have selected as your update: Major version or minor version?
For minor version it should be 1.1.0
Hi Shana,
This might be something on our side in the App Store.
Could you create a support ticket for this?