You must be facing Access deined issue when you work with Magento site. I am facing such issue frequently and it was due to admin privileges. You can be out of the issue by either of the below way.
1) Logout from Admin Panel and Login again
1) Login to Admin Panel
2) Go to System > Permissions > Roles > Administrators
3) Click on Role Resources
4) Set Resource Access to All
5) You Are Done.