[джах]

Валерьян, что ж ты не прочитал то, что Fabel насоветовал, а?

CAUSE
This behavior occurs because of one of the following conditions:

* The Data1.msi file is marked with read-only permissions.

-or-

* The directory:\Temp\installs directory does not have SYSTEM as an allowable user permission. Other directory folders, such as directory:\WINNT\Installer, may also need SYSTEM set to Full Control.