As an addendum, once in a blue moon it would come up as error 403 "too
many versions"
so I changed the version and it worked! However, in the control panel,
I couldn't set the default to the new version (Server Error)
But at least it allowed me to keep hacking.
This morning it all seems to be OK,
Hi,
If I had to guess, it sounds like you were uploading a lot of versions
in a short amount of time? Occasionally when this happens the app
gets in to a strange state where you can not upload for a bit. It
generally corrects itself within an hour.
Please note the quota for application uploads