Issues when rendering in terminal...

Hi there,

I'm having a number of issues that seem to occur when I render Aftereffects files using the terminal & aerender, rather than within aftereffects (CS4). I'm trying to render 1920x1080 HD to the Blackmagic 10 codec. I'm running OSX 10.6.2, with 6GB of ram and 2 x 2.26 GHz processors. It is installed with all the latest updates.

When rendering through the terminal, keyed footage that appears clean in AE has holes in its alpha channel. I'm using the keylight plugin and when viewing full quality in AE, as well as when rendering out of AE to QT, the alpha channel is clean, with no spots.

In addition to this, I've found that colours change slightly when rendering through the terminal compared to the AE composition window.

Has anyone experienced similar issues or know of a solution/work around?

Thanks in advance
Simon

Thanks for the response Walter. I'm actually comparing the two movie files in quicktime. This is where the differences are showing. And yes, I'm using snow leopard and AE 9.0.2.

The command I'm using to invoke the render is...

'/Applications/Adobe After Effects CS4/aerender' -project /Volumes/folders/folder/project.aep

I was also under the impression that aerender read directly from the aftereffects file and render queue keeping all settings as normal.

Any thoughts would be much appreciated...