Cleaning up callbackid to remove circular reference and allow destruction.
Cleaning up callbackid to remove circular reference and allow destruction.

ruschelp/cortex-vfx,code-google-com/cortex-vfx,ruschelp/cortex-vfx,ruschelp/cortex-vfx,code-google-com/cortex-vfx,code-google-com/cortex-vfx,code-google-com/cortex-vfx