Current Position:Home > My previous computer (with Lightroom 4 installed, teacher edition) broke down, I bought a new one - changing from PC to Apple. I was unable to re-install Lightroom 4 in the new computer.

My previous computer (with Lightroom 4 installed, teacher edition) broke down, I bought a new one - changing from PC to Apple. I was unable to re-install Lightroom 4 in the new computer.

Update:11-30Source: network consolidation
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I was unable to re-install Lightroom 4 in the new computer - the system suggests to contact Adobe. How can I solve the problem? I previously used only one installation.

The Best Answer

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Hi Ned,
at the very beginning of the installation process. I got the following message: (translation from Italian)Adobe Photoshop Lightroom 4.pkg cannot be installed because the digital signature is invalid. The certificate has been Invalidated.
As I said, I only installed the software once in my previous PC. The (student/teacher) version was both Windows and Mac compatible.
Thank you
Maurizio