My application dynamically adds a new tab using only t-sql.  Therefore, among other things, I add the permissions for the tab as well as the module included on this tab.  I have compared the values in the TabPermissions table for the tabs added using the normal dnn method, and my dynamic way and there are no differences in the permissions, and are as follows:

TabPermission table

tabid	permissionid	roleid	allowaccess	description
1	3	0	true	administrator can view system tab
1	4	0	true	administrator can edit system tab
1	3	-1	true	all users can vew system tab

I also add the correct values in the ModulePermissions table. 

Unfortunately, when i dynamically add a tab with the above settings, I get the following error:
You do not have access to view this tab within the portal.
Is there another table I need to modify?
Thanks in advance,
Caley