Driver installation

Hello NG,

I am currently testing our software installation created by Installshield12
on a Vista testing machine(Windows Vista Beta 2 Build 5384). The installation
works perfect on WindowsXP. On the Windows Vista Machine the installation
proceeds and comes almost to the end when suddenly a rollback is performed.
In the installation I included with the device driver wizard from
installshield the installation of a USB Driver. The support from
Installshield told me that this is most probably a problem of the driver
installation framework DIFXAPP. See below a pert of the installation log:

DIFXAPP: INFO: ENTER: DriverPackageGetPathW
MSI (s) (70!94) [10:05:55:281]: Closing MSIHANDLE (43) of type 790531 for
thread 1940
MSI (s) (70!94) [10:05:55:281]: Creating MSIHANDLE (44) of type 790531 for
thread 1940
DIFXAPP: ERROR: DriverPackageGetPath is not yet supported for PnP drivers
on LH.
MSI (s) (70!94) [10:05:55:281]: Closing MSIHANDLE (44) of type 790531 for
thread 1940
MSI (s) (70!94) [10:05:55:281]: Creating MSIHANDLE (45) of type 790531 for
thread 1940
DIFXAPP: INFO: RETURN: DriverPackageGetPathW (0xA)
MSI (s) (70!94) [10:05:55:281]: Closing MSIHANDLE (45) of type 790531 for
thread 1940
MSI (s) (70!94) [10:05:55:281]: Creating MSIHANDLE (46) of type 790531 for
thread 1940
DIFXAPP: ERROR failed to obtain driver store handle for C:\Program Files\My
Company Name\Inst USB\FTDIBUS\FTDIBUS.INF
MSI (s) (70!94) [10:05:55:281]: Closing MSIHANDLE (46) of type 790531 for
thread 1940
MSI (s) (70!94) [10:05:55:281]: Creating MSIHANDLE (47) of type 790531 for
thread 1940
DIFXAPP: InstallDriverPackages failed with error 0xE000020B


Any ideas?

Thx Benji