The links points to install.php?mode=install for me, I'll check that out as a possible bug.
Yes this mod is compatible with all templates. Just some may require more tinkering than others. Give it a shot by applying the subsilver2 edits and using the subsilver2 portal files. You could also try looking here
and if you can't see your style try posting a new topic here
. I know most of it is in German, but you should be able to find the "New Topic" button easily enough, they'll try their best to answer your questions in English.