Hello
Did you see any errors in the RA nolio_dm_all.log and in the update service logs?
In ROC, if the list of installed pack is empty this might be related to problem uploading the files from RA - uploadActions folder (e.g corrupted files) , try empty the folder first (Backup the files) and restart RA , next try to upload single pack using UI.
Note that you tried to import Hudson plugin zip file , this should be used on the Hudson server and not in the RA server
Thanks
Jacky