I am having a multi licensed Office Professional 2007 copy, which can be installed upto 3 times. I have already installed this on two PCs yesterday and now when am trying to install it on the last (3rd) PC, it says “pror.ww\osetup.dll does not validate or is not present”. Surprisingly there is no other option except “OK”. When I click OK, the installer quits.
Please help.
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