Using 2.0 search release, upload a random file (not a dataset with files). Now browse to the dataset (e.g. http://cadis.prototype.ucar.edu/dataset/682bdb03-6ba0-4bae-9b1c-c716fc0761bf.html) and click the "Download files for this collection" link under "Get Data". You are supposed to see a jsp displaying a table of files to download (e.g. http://cadis.prototype.ucar.edu/browse/viewCollectionFilesInitial.htm?datasetId=f84a3e24-43a7-11e1-8ca5-00c0f03d5b7c) but you get an Internal Server Error (type) message.

This is because the DisplayTag table is having a problem displaying due to the logic to filter out the pseudo-file "empty.file". (The uploaded file didn't have any actual Logical Files)