logic x can't edit key commands

hello, i am running logic 10.1.1. on Mac os 10.10.3. Today i was trying to edit some key commands. after working for a while. suddenly, i was unable to access the key commands-edit window under the global menu. when i hit option k to open the window, same thing. nothing happens. i tried trashing my preferences, reinitializing logic x, but to no avail. when i logged in as another use, i was able to access the key commands edit window, but still can't do it under my own user identity. i also repaired permissions, and changed advanced settings back and forth to allow them and not to. any help would be greatly appreciated.

dave

Logic Pro X, OS X Yosemite (10.10.3)