First thank you in advance for your help.
I just migrated from a Asterisk 1.4 system running FreePBX 2.9.0.12 to an Asterisk 1.8 system running 2.9.0.12. Everything was working including OSS Endpoint Manager after the migration. After upgrading and confirming everything working I upgraded to Freepbx to 2.11.0.0. Everything is still working except OSS is giving me a blank screen on “Advanced Configuration” and “Template Manager” and says I need to confirm my settings under advanced config. I tried uninstalling and reinstalling using module admin, but I still have the same problem. The installed version of OSS is 2.11.4.11. Any help would be greatly appreciated.