The following should not be "Allow use of [FLASH] BBCode tag in posts. :"... it should be "Allow use of [FLASH] BBCode tag in posts:"... there should NOT be a period before the colon.

----fully quoted text---
Allow use of [FLASH] BBCode tag in posts. :
If disallowed the [FLASH] BBCode tag is disabled in posts. Otherwise the permission system controls which users can use the [FLASH] BBCode tag.
--------HTH-------