OS = Windows XP professional SP2
don't know what program is used for download. but the download takes about half a minute and did finish "completed".
I now tried with an execute in stead of save when downloading. at the end it asks for execute software and again nothing happens.
Hmm... Did you just use your web browser then? Is it a plain MS I.E. browser? (I don't know if MJ8 offers to download the new installer directly).
In any case you could just try to right-click
this link and save the file to a local hard drive.
thanks for the tip of the backup, this is done with file-library-libray manager-backup library. I suppose that's what you meant.
Yes, that creates a backup file of your MJ8 library (= only the database files, not the media files or anything else). If you have several libraries you need to do that for each library separately.
However, as I said, it might be a good idea to back up the data folder too (outside MJ8). Actually, you could back up the complete MJ8 program folder (the default folder path is C:\Program Files\J River\Media Jukebox). You can just copy it to a safe location. It may contain cover art, plug-ins, skins, visualizations etc that you may want to preserve. Just in case...
EDIT
The link had a problem. It's fixed now.