Software Deployment

Hello all,

we have a problem when install our msi only in windows 7 (32 or 64 bits)...
i did a lots of search, but i do not found anything that could help...

i already tried:
1) install ISScript10.msi
2) install ISScript11.msi
3) Set the DCOM identity to launching user

here we have 6 msis that have the same GUID ({0FA15315-FCA8-443A-939C-97C79BB84257}), but this msis are not registered, they just copy the files to a specific folder....
during the install, we have this scenario:
first msi - OK
second msi - ERROR
third msi - OK
fourth msi - ERROR
fifth msi - OK
sixth msi - ERROR

the log show this result:

1: Event 'E5749281' is created
1: GetInstallDriver, Can not find InstallDriver in ROT table, Return Code = 0x800401e3
1: {0FA15315-FCA8-443A-939C-97C79BB84257}
1: Extract supporting files
1: Failed to extract _IsUser.dll, Ignore it.
1: Failed to extract IGdi.dll, Ignore it.
1: ISMsiServerStartup Failure, Failed to RegisterMsiServer, Error = 0x80004005
1: MsiServerStartup failed. Abort installation.
Ação concluída 08:57:51: ISMsiServerStartup. Valor de retorno 1603.

very weird because these msis have the same GUID, and one installs ok and the other return error....

i hope that i has explained the problem...

thanks