CreateFile GENERIC_WRITE on a directory

[ScratchMonkey]

Not sure if this should be in -users, but I'm trying to get the Tribes: 
Vengeance dedicated server going (1st person shooter) and it stops with a 
messagebox that it can't write to its own directory. Tracing the program 
with +relay reveals this:

000b:Call kernel32.CreateFileW(10415fc0 L"Z:\\home\\vengeance\\Server
\\Program\\Bin\\",40000000,00000007,00000000,00000003,02000000,00000000) 
ret=1015b46d
000b:Call ntdll.RtlIsDosDeviceName_U(10415fc0 L"Z:\\home\\vengeance\\Server
\\Program\\Bin\\") ret=554b4506
000b:Ret  ntdll.RtlIsDosDeviceName_U() retval=00000000 ret=554b4506
000b:Call ntdll.RtlDosPathNameToNtPathName_U(10415fc0 L"Z:\\home\\vengeance
\\Server\\Program\\Bin\\",559bebb0,00000000,00000000) ret=554b42c7
000b:Ret  ntdll.RtlDosPathNameToNtPathName_U() retval=00000001 ret=554b42c7
000b:Call ntdll.NtCreateFile
(559beba4,40000000,559bebb8,559beba8,00000000,00000000,00000007,00000001,00
004010,00000000,00000000) ret=554b438f
000b:Ret  ntdll.NtCreateFile() retval=c00000ba ret=554b438f
000b:Call ntdll.RtlNtStatusToDosError(c00000ba) ret=554b43bd
000b:Ret  ntdll.RtlNtStatusToDosError() retval=00000005 ret=554b43bd
000b:Call ntdll.RtlFreeUnicodeString(559bebb0) ret=554b43cc
000b:Ret  ntdll.RtlFreeUnicodeString() retval=00000001 ret=554b43cc
000b:Ret  kernel32.CreateFileW() retval=ffffffff ret=1015b46d

Decoding the parameters to CreateFile show it trying to open the directory 
for GENERIC_WRITE. I'm about to dig into the wine sources but am hoping 
someone can spot the problem more quickly than me.

I'm using the 20040914 source RPM from NewRPMs.