Hi,
Quite probably. There's a lot of assets on the DLS - most were created before TRS 2009 (let alone TRS 2010).
With TRS 2009, the uploading process has a revised error checking process (the standards didn't change much, but non-compliance was highlighted).
Try adding the build number (either to the search or in the display pane as another column) use >= 2.9 and try one of them.
If you use "Compaitibility mode on" then many of the assets marked as "faulty" will work in 2010.
Colin