The preferences page for Download them all is not working in SeaMonkey 1.0
This is because of the absence of an add-on called x-sidebar in SeaMonkey. Before installing Download them all add-on in SeaMonkey, you must install an add-on called X-sidebar which can be installed from addons.mozilla.org.
If you have already installed download them all, no worries, just install the X-sidebar add-on and then the preferences page will work for download them all.
This is because of the absence of an add-on called x-sidebar in SeaMonkey. Before installing Download them all add-on in SeaMonkey, you must install an add-on called X-sidebar which can be installed from addons.mozilla.org.
If you have already installed download them all, no worries, just install the X-sidebar add-on and then the preferences page will work for download them all.