[Bug 25375] New: dotnet30 install fails, complains about "RGB Rast"

http://bugs.winehq.org/show_bug.cgi?id=25375

Summary: dotnet30 install fails, complains about "RGB Rast"
           Product: Wine
           Version: 1.3.8
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

To repeat:
  rm -rf ~/.wine
  sh winetricks dotnet30

This fails for me with a problem dialog; one of the dialogs says
  Error signature
  EventType: wap10setup  P1 : 13855  P2 : 3.0.04506.30_waprtm_x86_sfx
  ...
  P10 : rgb rast

~/.wine/drive_c/$LOGNAME/dank/Temp/dd_dotnetfx3error.txt
contains
[12/01/10,14:33:20] RGB Rast: [2] Error: Installation failed for component RGB
Rast. MSI returned error code 1623
[12/01/10,14:33:45] WapUI: [2] DepCheck indicates RGB Rast is not installed.

~/.wine/drive_c/users/$LOGNAME/Temp/WLFc7cd.tmp contains in part:
...
[12/01/10,14:33:20] RGB Rast: ISetupManager::GetGlobalCustomProperty() failed
to find global prop in CBaseComponent::GetGlobalCustomProperty()
[12/01/10,14:33:20] RGB Rast: Looking for InstallPackage at RGB9RAST_x86.msi
[12/01/10,14:33:20] RGB Rast: Looking for InstallPackage at
C:\users\dank\Temp\IXP01FF2.tmp\wcu\rgbrast\x86\RGB9RAST_x86.msi
[12/01/10,14:33:20] RGB Rast: Looking for InstallPackage at
c:\c212ca7a9166e6c6923997.\wcu\rgbrast\x86\RGB9RAST_x86.msi
[12/01/10,14:33:20] RGB Rast: Found
c:\c212ca7a9166e6c6923997\wcu\rgbrast\x86\RGB9RAST_x86.msi
[12/01/10,14:33:20] RGB Rast: Installing MSI
c:\c212ca7a9166e6c6923997\wcu\rgbrast\x86\RGB9RAST_x86.msi with command-line: 
REBOOT=ReallySuppress
[12/01/10,14:33:20] RGB Rast: Enabling MSI log file:
C:\users\dank\Temp\dd_rgb_retMSI1FF2.txt
[12/01/10,14:33:20] InstallReturnValue: GFN_MID RGB Rast, 0x657
[12/01/10,14:33:20] Setup.exe: AddGlobalCustomProperty
[12/01/10,14:33:20] Setup.exe: AddGlobalCustomProperty
[12/01/10,14:33:20] RGB Rast: ***ERRORLOG EVENT*** : Error: Installation failed
for component RGB Rast. MSI returned error code 1623
...

(Looks like that .msi can be extracted and installed separately, fwiw. 
http://msdn.microsoft.com/en-us/library/aa964979%28VS.85%29.aspx looks useful.
I'll try that next.)