Missing Gift Vouchers/Coupons tab in Admin bar

[mossymc]

I am missing quite a few tabs in my admin bar, but im worried about my missing "Gift Vouchers/Coupons" tab.

I am doing some small maintenance for a friend's eCommerce site. I have very limited knowledge of Zen Cart but I want want to add Coupons to his checkout.

I have installed the "Discount Coupon" module in "Order Total" and by all accounts I should have a tab in the Admin nav bar titled "Gift Certificates/Coupons"? But this tab is missing and nowhere to be found.

Upon further inspection I have noticed that many tabs and sub-menu dropdowns are missing. Is there anyway to re-enable these tabs or are they additional add-ons?

I have attached images of what mine looks like and what mine should look like.

Thanks

[Ajeh]

Check and see if you have any debug logs in you:
/cache

You can also try to reload the files in:
/admin/includes/boxes/

[mossymc]

Thanks.

Found the problem, the issue was actually in the header_navigation.php file

[Ajeh]

Thanks for the update that this is working and for posting the solution to help others ...