Comment to Using tags in html and raw blocks
It maybe it's related to some other security software on your server, or even in your browser.
Is it possible to deactivate mod_security on your web-server to ensure that the problem isn't in it ?
It's fixed! I talked to my web host, and they white listed some mod_security rules that had been triggered.They said I could have it deactivated, but the whitelisting seemed to do the trick on it's own.
Thanks for all the help again! :D