Global Account on the Twitter Settings page does not display, does not show for individual users, other issues...

Howdy!

I have attempted to follow the oft-cited video tutorial at "gotdrupal", but I'm not getting anywhere. Scoured the issues queue, but it seems that most of the issues are related to situations where at least some functionality isn't present. I'm actually quite embarrassed that I haven't made it that far!

I have downloaded and installed the "twitter", "Twitter actions" and "twitter post" modules and have tried both the official module release and beta2 as well (uninstalling, running update.php, clearing caches, running cron [Cron run completed/successful], etc. each time). I have checked permissions and all authenticated users have permission to use the module and modify all settings.

All of the other module settings show up fine and I have set "Post settings" to content type "blog post". The defaults twitter view appears to be available as well.

When I create a blog post, I am not prompted to enter any twitter information.

When I go to create an action to "publish post to twitter" it asks me for user name and password, but results in a white screen of death upon submit. PHP error reporting does not return any information regarding the WSOD.

I will continue to bang my head against a wall (checking issue queue + drupal settings) until I can figure something out, but hopefully someone has an idea of what to check before I get too bloodied up.