See the issue cue there.
Users with "delete own account" permission can't access "user/*/delete page"... says "Access denied"
I experienced this issue as well and confirm it disappeared after I disabled the User One module. :(
Does the User One module override custom access permissions defined by other modules?

Comments

ki’s picture

ki commented
Status: Active » Closed (won't fix)

Both [User One] and [User Delete] modules implement hook_menu_alter() on 'user/%user/delete' to use their own access control functions. They are currently incompatible. Any suggestion to make them work at the same time is welcome.

Ki