[Bug 31007] New: Shogun Total War 2 (Steam) thinks it's pirated

http://bugs.winehq.org/show_bug.cgi?id=31007

Bug #: 31007
           Summary: Shogun Total War 2 (Steam) thinks it's pirated
           Product: Wine
           Version: 1.5.6
          Platform: x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
    Classification: Unclassified

Shogun Total War 2 purchased and installed through Steam plays fine, albeit a
little slowly.

However during battles, it shows a message at the bottom, saying something to
the effect that the installation has been tampered with, which can be due to
pirating or a virus, and then prompting to purchase the game or repair the
installation.

I have tried repairing through Steam and reinstalling but the message is still
there.