Okay so there is my problem, when i cast "Bound Sword : Creates a magic sword for 120 seconds " my game crash, when i hold my mouse it loads the spell but when i cast it, the game instantly crash... i dont really understand all my others spells are working, usually i start the game with SKSE so i started my game with the real launcher and uncheck all my mods in DATA FILES but same problem :/ so if someone can help me .. plz ^^ thanks

Which version of SKSE?

i'm using skse 1.04.10 but i dont think the problem is from SKSE because as i said i also tried without SKSE ( start with official launcher ) and i have the same problem :/

Just checking. Have you verified the files to make sure something isn't corrupted?
Also, going to need some more details here:

What are you using that requires SKSE?
Are you using any other extenders at all?
If so, what version and what requires them?

But this does sound like an odd one...

hum i dont really know how to check files, i'm using SkyUI my others mods are only retextures and i have also scrypt dragon with the last update ( v1.4.21.0 ) i just tried to remove the spell with the consol and add it again but still have crash, but i dont understand because this spell worked perfectly before, i'm not using it alot so i dont really know when it started to do that ( sorry if my english is not perfect try my best )

Verify:
https://support.steampowered.com/kb_article.php?ref=2037-QEUH-3335

Have you tried removing all the mods and third party software/libraries into a separate directory entirely?

i checked my files nothing wrong, removed script dragon and rename my mods folders and same problem but i've found something ... when i load an old savegame the spell works fine and with my last one crash

Hmm, may have been a corrupted save then. Interesting...

yep, and looks like i'm not alone because i search on google " skyrim bound sword crash " and some players have the same issue i'm not using this spell a lot so it's not really bad but i dont like that, i hope i'll not have the same problem with other spells later ......

thanks for ur help

I checked my pure mage (does no damage with anything but spells, including bound weapons) and he, too, cannot cast his bound sword. I verified the game cache, resaved and restarted the game to make sure, and yup...that spell is now an instant CTD. Happens on both new and old savegames, so it's NOT a corrupted savegame unless all 10 of them are corrupt in exactly the same way, which is extremely unlikely.

It would appear that Bethesda has changed something in that particular spell that broke it. Bound Bow, by the way, works fine from all 10 savegames.

I have posted 2 savegames to the Unofficial Buglist thread. In one savegame my char is level 13 and the spell works fine and in the other savegame my char is level 14 and the spell makes the game crash to the desktop. Something along that way must've corrupted it. I was doing the dark brotherhood quests mainly.

Pretty sure there has been a bug with bound sword since release...I don't play heavy caster classes so no personal experience but I have read over issues with bound sword(in particular) in passing numerous times.

My character with this problem hasn't done the DB quests, so it can't be there...it can't be a corrupted savegame, because the spell is defined in the game files, not in savegames...all that's saved about them is whether you know it or not, and if it's currently running when you save. And if the game files got corrupted, it would happen for ALL characters on ALL saves, and verifying the game cache would fix it...