I have downloaded a trial version of lightroom 4 to upgrade from my lightroom 3, but it wont open.

Hi all, I have downloaded a trial version of lightroom 4 to see if I want to upgrade from my lightroom3, but it wont open on my pc. It keeps asking me what program I want to use to open it with, and when I click adobe reader it tells me that it is not a supported file type or the file has been damaged! Help!???

When I click on the program download in the download file, it asks me if I want to open it. When I click open, it then asks me which program I want to use to open it with, (this window lists all programs such as Nero, internet explorer adobe reader etc) and automatically highlights adobe reader. After I click open with the adobe reader highlighted, it then tells me that it cannot open Lightroom because it is not a supported file type, or the file has been damaged! I have downloaded it twice but neither one is able to open. Thanks so much.
Heidi Christie
“It’s a Beautiful Day, Don’t let it get Away…”- Bono, U2
[email protected]
082 5747 805

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