Cant change my mag evolution to previous one

[sesiom000]

So i used couple of evolution i had on my storage and i wanted to get back to my old one the samurai looking one and i have the mag on my evolution list but i cant change it it gives me this error:

マグ形態変更パスがないため
実行することができません。

Does anyone know of this error?
thanks in advance!

[sesiom000]

Yeah i just found that out in a minute!
Thanks for the quick reply!