I would clear the log, then cause the error then look in the log and see what the error is.

Download Terms Administration allows you to define how many times users may download purchased downloadable products. You can make it unlimited, you can limit it to a specific number of downloads or a date range. So you define the download terms and you assign it to the product offer. When a user purchases a product a download ticket is created that reflects the chose terms and this is what enforces the download terms.

Please post the error but try to only post the specific error not a large chunk of your log.

Best,

Joe

Things like application start and end event are logged using localized resources based on the browser language setting unless you configure it to force a particular language. So for example if your site doesn't get any traffic for 20-30 minutes the application end event fires and is logged and then the next request that comes in fires the application start event which is also logged, so if that first request comes from a user with the browser set to a different language it will log it in that language assuming there is a resource file for that language.

If you wanted to force your site to English only resources you could add this to user.config

<add key="UseCultureOverride" value="true" />
  <add key="site1culture" value="en-US" />
  <add key="site1uiculture" value="en-US" />

but seeing that in the log isn't anything to worry about.

Best,

Joe