- Why are you using Mambo?
Most Add On developers are no longer creating scripts for Mambo since they have moved on to Joomla.
Joomla is more or less the continuation of the Mambo project. - Did you set all of the folders that you were told to to 777 during setup?
In order for Mambo to write or create a file, the folder it is using must have public write permissions (777).
In file manager, click on the "NAME" of the folder then in the top write corner, there will be an option to change permissions. Either set to 777 or check ALL of the boxes. - You shouldn't need to create or edit the .htaccess or php.ini to get your system to work!
I'm assuming that you are getting this message in the Mambo configuration screen!
Like I said, I think that you will be a lot happier with Joomla. I also think that you should consider using FireBoard instead of SMF since FireBoard is a Joomla Component while SMF has to be bridged and the bridge has a few issues.
Good Luck,
vujsa
1.I am using Mambo because it can be bridged with SMf (The bridge with Joomla has been discontinued)
2.Yes, I am sure I have got everything 777 like it said
3.Thank you for letting me know

Yes, I am getting this error at the configuration screen (Actually, it is the pre-setup or check-requirements screen.
I did read your suggestion and really appreciate it, but the reason why I am still using SMF because of its feature in version 2.0 , it is unbeatable

and it has way too many cool add-ons that I really need.
Thank you for your help.
Any suggestion on how to fix this ?