Well, I just went over this carefully;
http://www.subsim.com/radioroom/show...13&postcount=1
It doesn't mention the U-Boat expansion pack anyplace that I can find, it also doesn't mention any particular version number of SH4. If it requires the 1.5 PATCH is there a free 1.5 patch someplace? Or does it need the expansion pack and that's just something everyone assumed we would know?