XF 1.2 CSS.php giving issues

[Blackbeard]

ErrorException: Fatal Error: Class 'put' not found - css.php:12
Generated By: Unknown Account, 10 minutes ago
Stack Trace
#0 [internal function]: XenForo_Application::handleFatalError()
#1 {main}
Request State
array(3) {
["url"] => string(160) "http://www.xxxxxx.com/css.php?css=b...page,thread_view&style=2&dir=LTR&d=1376006705"
["_GET"] => array(4) {
["css"] => string(89) "bb_code,facebook,likes_summary,login_bar,message,message_user_info,share_page,thread_view"
["style"] => string(1) "2"
["dir"] => string(3) "LTR"
["d"] => string(10) "1376006705"
}
["_POST"] => array(0) {
}
}

I've updated the the style to 1.22 but I'm not sure how to prevent this error. Any thoughts?

 

[Jeremy]

What's the output of a file health check run?

 

[Blackbeard]

Potential Problems

1. css.phpFile does not contain expected contents.
2. fb_channel.phpFile does not contain expected contents.
3. admindav.phpFile does not contain expected contents.

 

[Jeremy]

Upload your files again, specifically those three unless you made changes to them and you know what the changes are and for.