There are a number of words that BotBanish will not allow in the URL for security reasons of possible database or PHP hacking in the URL request.
To alleviate this issue you can remove these words from your subject matter that the Pretty URLs MOD will use then run Pretty URLs Maintenance to recreate your SEO URLS.
Example: In phpMyAdmin you can run a search for %select% in the `name` field of the smf_boards table to find all the records that have "select", "selected" or any form of the word "select" in the field. You can then run an SQL query to change the word "Select" to "Chosen" etc... Make sure you change the longest word first (ie. "selected" to "chosen") or you will get unwanted results.
You will need to do this to the `name` field in the smf_board and `subject` field in the smf_message tables.
The words (sub-words) that need to be changed are as follows:
SQL Keywords
md5
benchmark
union
select
insert
cast
declare
drop
alter
PHP Keywords
else
case
switch
require
include
function
return
isset
foreach
global