Video Module working, but unable to use Amazon S3 configuration

Hi:
I installed the Video module. Works without using transcoders and saving video file to files/video. I dont need transcoders as I am not allowing users to upload videos. The admin is the only one that creates video content.

I would like to save videos on S3. My drupal site is itself hosted on AWS in Pacific Region.

I created a bucket in that region.
I went to the video configuration - Amazon S3 tab (mysite/admin/settings/video/amazon_s3).
Once I enter my access key and secret key and bucket name and hit "Save Configuration", I get the WSOD (white screen of death).
I refreshed and came back to this page and hit "Reset to defaults" and get WSOD.
I uninstalled module, downloaded tar file again, unzipped and used that. Reinstalled.
Went back to config page, entered nothing other than click "Reset to defaults" and get WSOD.
Installed the Amazon S3 Module (https://drupal.org/project/amazon_s3)
and went back to config page and got that same issue.

Can someone please tell me if I am missing a step OR how to troubleshoot this??
This seems to be a great module and I would love to be able to use it :-)
Thanks a lot.
ZZ