NIK 5.7 upgrade will not install

Message “An error has occurred, status code 0x80070652” Task Manager says the installation file is 32 bit. My system is 64 bit. What is going on here?

Hi Raymond,
may I suggest to download again – otherwise contact DxO support.

I should have also asked "what is rev 5.7? Is this a maintenance upgrade or an improvement? I am using 5.6x and everything runs fine, Could I just ignore it?
Wolfgang; I did re-download and it stilled stalled out.

Did you check ?

Thank you Wolfgang.