I have just upgraded an Aironet 1852i to 8.8.111.0 and experienced the "retry: not found" message indicated in this bug. I also noticed some forms in the web GUI, specifically adding a WLAN, were not populating correctly (showing code instead of field names, drop-downs not working, etc.).
However, a single reboot resolved both of these issues. I rebooted a second time before posting this comment to see if the messages returned but they did not.