The example about using local image files described in
http://weblogs.java.net/blog/joshy/archive/2006/07/getting_started.html does not
work if the files have been packaged as resources into a jar file (they are
pointed by URLS starting with jar:file:/path....
This issue can be fixed by patching Tile.java:
265 if (LocalResponseCache.IS_CACHE_DISABLED || "file".equals(uri.getScheme())
and adding "jar" as a case that makes the if condition true.