Hot on the heels of yesterday’s SDK 1.2 release, we have released Add-on SDK 1.2.1 to address a critical issue that surfaced in 1.2 which would have prevented add-ons from being distributed on https://addons.mozilla.org/en-US/firefox/. Thanks to community member Carey Tilden who reported this issue to the Jetpack mailing list!
This issue occurs if you create an xpi file for your addon with SDK version 1.2 and then upload it to the Addons site. There error you will see is:
Invalid minimum version number
Error: The minimum version that was specified is not an acceptable version number for the Mozilla product that it corresponds with.
If you are using the Add-on Builder, please note that we do not expect 1.2.1 to be deployed to Builder until 1PM tomorrow PDT ( Thursday, Oct. 19 ). Feel free to continue developing with Builder in the meantime but keep in mind that, until SDK 1.2.1 is deployed to Builder any xpi packages created will fail validation when uploading to the addons site.