Can I restore remixbox to a previous version?

Yes. First uninstall the currently installed version of remixbox, then install the old version.

The uninstallation procedure is described below.

For a Mac OS computer:
Move the remixbox folder to the Trash.

For a Windows computer:
From the [Start] menu, select “Uninstall remixbox” at [All Programs] , [Pioneer] , [remixbox1.x.x].
“1.x.x” indicates the version of remixbox.