The other ticket is reference the issue with Access.
This one is reference that I have found when I use another plugin to control roles and access, the role needs to have the "delete_user" capability otherwise they can't edit or modify Toolset custom code snippets in any way (even if "manage_options" is enabled).
The sort of situation where you want a user to have full "admin" access to the Toolset plugin suite, but not have admin access over the WordPress installation.
So they can use Toolset fully, Views etc, but not modify the site outside of posts, pages, CPTs and toolset. To prevent plugin/theme/any other changes to the site.