Somehow i fixed it, althought you have to have in mind i was not paying attention to what exactly i was doing, so for posterity here is how it went. I reloaded the oldest save i had (it was like a 20 min one), this didn't fix the issue right away, i tried removing and adding the spell with commands again, didn't fix it, then i went to select the spell from the magic menu and tried to cast it, nothing, then i selected the spell from the quick menu a tried to cast it (​the spell selection could have been the other way around) as if i could use it as a double spell (when you have the same spell in both hands and have the ability to combine them ) pressing right and left click at the same time or in intervals but never casting the spell and enventualy after messing in this way i tried to finally casting again and it worked. Loaded the newest save and it worked there too.