Having issues with paperclip, S3, and Aptana Cloud

I'm using paperclip to allow users to upload an "avatar" (pretty
standard). The problem is, it works just fine in development, but when I
deploy the app, it will only upload the original image to S3, but not
the resized images. I've looked all over, and I suspect it may be a
problem with rmagick (although, I'm not sure about that), I checked the
list and rmagick is installed.

Has anyone else encountered this? or can someone point me to a possible
solution? Does Aptana support rmagick and image magick, or do I have to
do some configuring of some sort on the cloud where my app is deployed?