Can't post + posts cut off.

[StarredSkies]

Hello! For some reason I cannot post on my site and neither can the members. We get a HTTP Error 500 when trying to do so. Though they can't create new topics or reply, they can edit their posts. Is there any solution to this problem?

Before we had this problem, signatures and posts cut off, even with an unlimited character and word limit. Any fix to this also?

I currently have 2.0.15 and these packages:
- More genders
- SMFShop
- Stop Spammer
- Subaccounts
- BBCode with Style
- Drafts [deleted, still in installed tab]
- Current signature [deleted, still in installed tab]
- Simple Colorizer [deleted, still in installed tab]

[Illori]

https://wiki.simplemachines.org/smf/Why_do_I_have_partially_blank_or_missing_text_in_posts

[StarredSkies]

They are not using special characters, unfortunately.

[Illori]

everything you posted falls under mod_security being the issue. converting to UTF-8 does not hurt either.

[StarredSkies]

Just converted. I also followed a guide to disable mod_security. I still find trouble.

[Illori]

then ask your host to disable mod_security.