[Bug 10526] New: Null pointer de-reference playing half-life 2: wine kernel bug?

http://bugs.winehq.org/show_bug.cgi?id=10526

Summary: Null pointer de-reference playing half-life 2: wine
                    kernel bug?
           Product: Wine
           Version: 0.9.49.
          Platform: PC-x86-64
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-kernel
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=9272)
 --> (http://bugs.winehq.org/attachment.cgi?id=9272)
backtrace from winedbg

I've got about half-way through HL2 (all with 0.9.49) and the game has suddenly
started crashing on startup with a null pointer exception. It's worked fine up
to now!

Is this crash in the wine code? I'm not familiar with winedbg. Backtrace etc
attached, happy to do any other suggested tests.

Other Source games are still working fine; Portal works (with the fglrx radeon
driver -- the r300 driver doesn't have fragment shaders & I think that's
breaking it, it refuses to start).

Error trace attached

cheers, Phil