I own SH4, and have it installed on my computer in Program/Games/SH4. Apparently, the automatic install for the UBoat missions doesn't recognize this, and aborts the installation. The install program doesn't give the option of manually directing the program to the correct program game path. If anyone has any suggestions on how to correct this, I would appreciate it. I've already fired off an email to ubisoft, but given its the weekend, I won't hear back until Monday