ValueError: Unknown block algorithm

[tufelkinder]

Attempting to use the smime.encrypt.encrypt() function generates this error when passing in a public key or a cert. Not sure if this is a bug or not, but any suggestions would be much appreciated.

What makes this more confusing is that when I import the blocks.py code and execute get_cipher, it seems to work fine and correctly return a cipher, but when executed from within the encrypt function, this no longer seems to work.