I quick fix is to open /libs/html1.php
find function do_pages($total, $page_size=25) {
In this function there will be 5 lines that start like this...
echo '<a href="?page='.$i.$query
Change them to start like this....
echo '<a href="
/?page='.$i.$query
I can't think of a permanent fix at the moment, so I'll come back to it again.