I have tried to download Lightroom 4.1 on three different occasions and after it have downloaded completely, I get the error message "Adobe Reader could not open 'Lightroom_4_LS11_mac_4_1-2.dmg' because it is either not a supported file type or because the file has been damaged (for example, it was sent as an email attachment and wasn't correctly decoded)."
I have the latest Lion OS on my iMac as well as an updated Adobe Reader.
Is it possible to buy a CD that has the upgraded files? (Yes, I have a registered 4.0 Lightroom on my computer).
Someone had suggested I contact Sales Support for information. How does one get sales support - the only thing I see is sales.