Default [Q] Nokia Product Support Tool Error

Sorry I am posting here guys but I downloaded the Nokia Care Suite 5.0, because I want to flash my Nokia Lumia 920. I downloaded all drivers for it and the Data Package Manager. But when I start the Product Support Tool For Store 5.0 I get an error like this:

Failed to create COM-class maker Calling a (z) {6BCF7DCA-7B86-453E-BC72-724E0E656B95} CLSID identifier component for due to the following error: 80040154 Class not registered (Exception HRESULT value: 0x80040154 (REGDB_E_CLASSNOTREG)).
the following location: Nokia.CareSuite.Connectivity.FuseConnectivity.Load Fuse ()
the following location: Nokia.CareSuite.Applications.ProductSupportToolFor Store.ProductSupportToolForStore.RunInternal ()
the following location: Nokia.CareSuite.Applications.ProductSupportToolFor Store.ProductSupportToolForStore.Run ()
the following location: Nokia.CareSuite.Applications.ProductSupportToolFor Store.ProductSupportToolForStore.Main ()

What's this? And how can I fix this error?
Thanks for your help guys!