diff -ur u4.orig/src/u4file.cpp u4/src/u4file.cpp
--- u4.orig/src/u4file.cpp	2004-11-29 06:38:26.000000000 +0100
+++ u4/src/u4file.cpp	2007-02-02 15:59:34.000000000 +0100
@@ -236,6 +236,9 @@
         if (!pathname.empty()) {
             /* original u4 zip is present */
             add(new U4ZipPackage(pathname, "ultima4/", false));
+            /* add twice as sometimes the zip contains an ultima4 dir
+               and sometimes not */
+            add(new U4ZipPackage(pathname, "", false));
         }
     }