Delete JVS_Doors. They are obsolete.
Instead, download the door packs (0, 1, or 2), whichever of the three you want. The switch packs are good too.
When you have JVS_Content and the JVS pack(s) of your choice, enable the ones you would like to use (you must enable Content) and they should be in your brick selector. If you have too many tabs, press tab while in the selector or download the Tab-shifting add-on.