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upload a new extensions fail Unable to save version. Filename is not valid. Expected filename without ext i
So I think I know what the reason is. When you are asked for the extension key when creating a new extension on magentocommerce.com, don’t add the form key over there as your extension key. It’s meant to be something unique like Namespace_Module.
When you do that, the error should go away and you should be all good!
In my case it was problem about capital letter inside word Community. In Magento documentation is wrote:"If you are packaging an extension using a Magento 1.5 and later version and the extension only s upports 1.5 and later versions of Magento use the following settings:
But that is not correct. It should be community. When I changed that, the extension was successfully uploaded.