Remove mssql from the installation db list
Tikiwiki does not support mssql, so why is it still in the db list when choosing options during installation?
If a user is mislead into believing tikiwiki supports mssql, because it appears in the db selection list during install, then it's a rude shock to discover a few clicks later that there isn't even an mssql db schema included in the install package — at that point the tikiwiki install process simply dies when it can't find it.
To save confusion and disappointment, please do the sensible thing and remove it. Or, as an alternative, throw in some other non-supported db platforms to really confuse people during install.
meanwhile, I'll continue to use PHPBB + PMWIKI as our departmental groupware solution and hope that tikiwiki gets around to supporting odbc or properly implements database abstraction.