I can't tell you that without seeing the exact error message you're getting. If you repeat the process, then there should be an error inside your cache/sql_error_latest.cgi file. Please paste the contents here so that I can see the error.
You probably have to use the actual field name (which is not article_image). It's going to be field_##. I'm not sure what the ## is, you'd have to check your database for that. In either case, try using that and see if it works.
Very strange. That is definitely where it's coming from. Are you sure your language pack isn't protected or something? It is definitely not hard-coded. That's typically set by a developer. Leave it as is.
I haven't had any complaints about resources. The feed data is not pulled in real-time. It's captured and stored ("cached", if you will) in real-time, but then when you view the feed, you're basically only pulling data from a single table instead of from across the entire database.
You should be able to reorder the questions within a collection. So, in the ACP , find the collection you want to work with and click the "Manage Questions" button. Then drag and drop the questions into any order you want.
A new version has been uploaded to the Marketplace. Changes include: Users who had no permission to see profiles (e.g. guests) were able to see profile updates, registrations, etc. Fixed. All-day events were displaying as one day behind. Fixed.