Any "Preference" menu work arounds?

[John]

   Under OSX (10.9.5) using LC 7.0 RC2, I cannot disable the “Preference" menu item.  Under previous versions, deleting the menu item, and separator above it, from the “Edit" menu disabled “Preferences" in the menu bar.  This is no longer the case.  The trick detailed in http://runtime-revolution.278305.n4.nabble.com/Disabling-Preferences-Menu-td3326955.html also fails.

   Does anyone have a work around?  I realize that the version I am using is a release candidate but I thought that I would use it to find bugs (this has been reported) and get a head start.

Thanks,
John