Netbackup appliance not able to display the "manage" page on the browser

i have to Netbackup appliances runninig on suse linux on kernel 2.5.3 and am able to access them through the browser and login though when i try to acces the "manage" page , they both display blank pages. urgently assist as i have to upgrade both devices to 7.6 so that my backups for Vmware 5.5 can take palce