It might be the compatibility between WLC v7.6 and PI 1.4. You might have to upgrade to PI 1.4.1. I'm guessing that you followed the guide for setting this up properly. I'm running WLC v7.6 and PI 2.0 with AVC working, but I'm not saying you upgrade to that. If you followed the guide, then maybe patch your PI 1.4 to PI 1.4.1 and try again.
I forgot to mention that I have also the latest patch 1.4.1 installed.
Is there additional settings on Prime Infrastructure? From the manuals I'm not so much clever.
In first guide I found, that it's just enough to set monitor and export to Prime, then after adding the WLC into the Prime it will work like miracle. No mention about that the Assurance license is needed.
In other guide I found, that you have to set some monitoring templates in Prime in order to enable that feature. However nothing directly for 1.4, just 1.3 or 2.0.
Transferring Crash file from standby: Login to the Active WLC in HA.
From CLI: (Cisco Controller) >transfer upload datatype crash (Cisco
Controller) >transfer upload filename (Cisco
Controller) >transfer upload mode tftp (Cisco Controller) >transfer
This is the start of a display filter cross reference between Wireshark
and OmniPeek. The 1st installment is a table of advanced filters. More
filters will be added as time allows. It is a living doc, so check back
for changes every so often Please feel f...
I have created a Powershell script to automatically add a Wireless Guest
User on Cisco WLCs. (tested on 2500 Series) The script should be
completely self explanatory. Prerequisites: Powershell SNMP Module
(Install-Module -Name SNMP) SNMP Write Access to y...