Aefyr

Are you sure your private key file matches your template file?

Actually I don't know since I've only ever used this lib with testkey, but according to Google you can use KeyStore Explorer. By the way, how did you make your...

Also you could try signing 2 different APKs with your key using apksigner and diffing their .RSA files to see if maybe there're more/less than 256 bytes in .SF file...