cannot save new PHP snippet to DB

I have this problem (example):
1. new snippet > [[phpinfo]]
2. add:
<?php
?>
3. save. all is ok.
4. modify snippet by:
<?php
phpinfo();
?>
4. save > error > Forbidden : You don’t have permission to access /manager/index.php on this server.

curiously, same thing happens if I want to add it directly in PMA! simply crashes...

the same thing happens with js too, but I’ve managed to insert some in the page with @FILE (I was under pressure to do the job)

Anyone has any idea why this happens? Any suggestion or idea would be very useful!
Thanks in advance

One word: mod_security. Do a search on the forums for it and you will find several discussions about it as well as solutions.

Indeed, Mark.
That’s true. I am waiting for the answer from the guy who is in charge with the server.

btw... Ditto rules!
MODx rules, no doubt about that.
A big THANK YOU for each one who’s building this fantastic CMS and PHP Application Framework !
Keep up the superb work!

For what it’s worth, the guys that write mod_security are hopefully going to supply a set of custom rules that make it work with MODx without turning it off. Hopefully soon!