[HELP] Quick reply doesnt work

[theFM]

Don't Know about other problems

Any time, no matter what setting quick reply is on (click required/not required) after i press submit it brings me to a page that says the message I have entered is too short and to lengthen my post to x amount of characters, even though it well surpasses that.

For this problem
you have to set the no of words required for posting a reply for doing this
go to

Admincp > vBulletin Options > Message Posting and Editing Options
Set your Permissions and Options from there.

if it is caused by your Mods Installations
Try to disable all mods from config file and try to see if it works for you.