gpg: verify signatures failed: Unexpected error

I’ve donwloaded diaspora form github https://github.com/diaspora/diaspora and there is only fingerprint at the bottom of the page and if you click it whole key block will appear. So I copy all the key block paste it in to kwrite ande save it as diaspora-develop.zip.sig but when I did Code:
gpg --verify diaspora-develop.zip.sig diaspora-develop.zip
gpg says unexpected error. When I import key form that .sig file it list that pubkey just fine. Why would then the verifying fail?

There is a double post about this here: https://forums.opensuse.org/showthread.php/494983-gpg-verify-signatures-failed-Unexpected-error?p=2620614#post2620614

I assume that is the better one. This is CLOSED and will be deleted.