The short answer is to rephrase any failing post to eliminate all left parentheses. Most of us can stop reading this post right here.
The phpBB3 software that we use has a bug that causes posts containing certain sequences of the form "keyword
" where keyword
is any of a number of special words, and x
is any non-space character. So for example, a prospective post containing any of these sequences will fail:keyword
(Xk ey word
( ykeywor d
try to keyword
You can reproduce this by attempting to post something containing a sequence like one of those above where you replace keyword
, which is one of the special words.