[SOLVED] user manager v4.2 items cannot be edited

why i can’t edit or add items(such as routers, credits, users, customers) in user manager through the web gui? i changed nothing but the version.
Adding users through Generate button still works, delete does too… my permission in customer is already Owner(as i said that i have changed nothing)

i’m so thankful to anyone who helps

upgrading major release is very frustrating… as for instance, the changelog didn’t mention any changes on user manager…

i did not think that this bug is related with “HTTP 404 navigation thorugh hotspot interface” since i don’t use hotspot interface to get in to user manager, but heck, i just try it anyway, i change www service port from 80 into 81, and then “tada”, i can add/edit items again on user manager.