Dear Invenio team,
I have installed invenio 1.1.1 and reloaded demo records. It is faild when I open ps.gz file in the collection 'Articles', I got the message The compressed file format unknown or data has been destroyed I do not know why the ps.gz file cannot be opened. Do I need to install some packages also? thank you very much !! Regrads, Lanxin

