When using Confluence 2.8.0 (I know, not yet supported--but everything else seems to work!), the {attachment-data} macro no longer works properly. It presents the Browse... button to allow the user to upload a file. The file can then be selected, and is uploaded upon saving the page. However, the filename is always named 'upload_<random nums&lets>.tmp' rather than the original filename. When using this plugin with pervious versions of Confluence, the name of the uploaded file was correctly preserved.