[PD] Problems with video mixer and abstractions

[Antonio Roberts]

I've created an abstraction (player.pd) to play/preview a video that
uses GEM and [#see] from Gridflow to preview. It can be downloaded
here http://dl.dropbox.com/u/350846/mixing.zip. Whenever I try to mix
two (videomix.pd) of these using [pix_mix] the video on the right
displays as it should, but the one on the left changes to the output
of [pix_mix], which shouldn't be happening.

Can anyone help me point out the problem?