You can probably avoid it by modifying bbdisplay/pagegen.c
Index: bbdisplay/pagegen.c
===================================================================
--- bbdisplay/pagegen.c (revision 5898)
+++ bbdisplay/pagegen.c (working copy)
@@ -786,7 +786,7 @@
sprintf(filename, "bb%s", htmlextension);
sprintf(rssfilename, "bb%s", rssextension);
sprintf(indexfilename, "index%s", htmlextension);
- symlink(filename, indexfilename);
+ unlink(indexfilename); symlink(filename, indexfilename);
dbgprintf("Symlinking %s -> %s\n", filename, indexfilename);
}
else {