[PD] ERROR: -35 in GraphicsExportSetOutputFile() GEM: Unable to save image to 'gradient00001.tif'

[Alexandros Drymonitis]

Yet another question regarding Gem. I'm connecting the outlet of [circle]
(which is being rendered in a Gem chain) to the first inlet of [pix_write]
and when I send a bang to [pix_write] I get this error and, obviously, no
image is being saved. The object's help patch is not helping me thoroughly
to be honest. What kind of messages do I have to send to [pix_write] if for
example I want to save a .jpg? And of course, why doesn't it save any image?
I'm on OS X 10.8.5 with Pd-extended-0.43.4

Thanks
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