I recently started checking the Blender console as a way of troubleshooting Blender, a great interface tool very rarely mentioned; I found no errors in general, but I was surprised that on closing the User’s Preferences the console throws a cryptic message that I guess is a warning: <!> event has invalid window. I can reproduce this consistently: on closing the User’s preferences the console invariably prints the warning (see screenshot).
This does not appear to affect any other functionality of Blender, but I am just curious; does anybody know the cause of this or, even better, a solution?. I am testing on Blender 2.74 (official release), Windows 7 64 bits 12 GB RAM Intel Core 3.4 Ghz. with a AMD Radeon HD 7770.
Can anybody help? Thanks in advance to everyone out there.