Render problems in After effects (& questions)

[Ricardo13]

Hey again,

I saw some cool stuff ppl did in after effects so I thought one day I should get me that program.. I checked the price and... HOLY COW IT'S EXSPENSIVE!
I got the money now but I first checked the trail version of CS3 it's kinda great I learned the very basics from andrew kramers tutorials I tried to do some scenes with modelviewer and mapviewer everything looks great but everytime I try to render it as an uncompressed AVI or quicktime format I get an error message "Key-light has crashed" and all the other effects I used

and because I'm new to edit with CS3 I'd appreciate some advices like:

-How can I let my characters walk through the picture while the camera walks from left to the right of the screen

-How do I do the whole Zoom fuction?

-Do you often use stuff like Motion tracking in WoW machinimas?
If so when and why? (I know that you can use it to tuck some signs on a building wich a character passes)

if you have more tips just tell me


PS: me english no good!