David,
I think I got over the initial issue I was having. I noticed at the bottom of the installation check area that it said "fail" for the exiftool. I didn't have this tool installed, but I'd left the field blank for it's path during installation. However, it appeared it was trying to use this tool
I installed exiftool, ran a fresh install, and my http 500 error went away.
My upload works fine now, but I'm not getting thumbnails. The issue appears related to delegates in imagemagick. I'm getting errors like this:
convert: no decode delegate for this image format `/srv/www/asset-docs/include/../filestore/3_d18b4636edc58e3/3_b7adb631be17e84.jpg' @ error/constitute.c/ReadImage/544.
convert: no images defined `/srv/www/asset-docs/include/../filestore/3_d18b4636edc58e3/3col_64d8524ae27c355.jpg' @ error/convert.c/ConvertImageCommand/3032.
As this is a different issue, I guess I'll open a new thread if I can't figure it out. Thanks all for your help!
Aaron