No Data on Management Page

We have 6 AP 1221 and when we log on to the managment IP via web browser, we get no information on the screen, as no SSID's or AP are shown, its a complete blank page.

We need to unplug the current PVC and then the SVC is promoted to PVC and then we get information on the managment portal. When we plug in the previous PVC that was unlugged it promotes itself to PVC and then we get no information again.

We are running software version on the AP1221.

Do you have a solution for us and has this been experienced before on this release with anyone else?