Glitches in Artmatic Pro Using Snow Leopard

[Serendigity]

Hi Edward, I have just purchased an iMac 27inch running Snow Leopard
10.6.2 and I have noticed some strange behaviour in some renders in
Artmatic Pro ver 4.73. As an example, a randomly generated set of
tiles (not one of my own earlier from a prior version) will render to
the screen as expected, but when rendered to a TIFF file it has a
large grey blob in the image.. I can send the file and a screen grab
and the output tiff to you if you provide me an email addy to use.

I have also seen the occasional black vertical banding in screen
renders of both Artmatic and Voyager. Is this to do with Snow Leopard,
or the size of my 2560x1440 screen?

Thanks,

Steve

[Edward Spiegel]

Hello,

Does this happen with all trees or only some?

This behavior sounds like you are rendering a tree that has 4 outputs at the bottom (which means an alpha channel is exported) but whose fourth output hasn't really been set-up. Please see the tech note about alpha channels

http://www.uisoftware.com/armatic/technotes/alphaChannel.html

Let me know whether that solves the issue.

Best,

Edward

[Serendigity]

Yep that was the problem. Thanks Edward. I need to get stuck into
the manual. :-) I promise I will... Soon...