I purchased LR4 last summer and downloaded it to my Mac. The Mac is not working properly all the time now, and I'm told I can download the LR4 to my PC to use it there. However, when I tried it, the doanload was only partial and I could not install it. What should I do? I have to edit photos. Just for the record, I recently subscribed to the one-app to use Photoshop on the Mac, so I assume I can use something similar to rent LR4 on the PC if I can't download it.
Licensing has nothing to do with your technical issues. Since you didn't provide any relevant facts like system information or a better explanation of what actually went wrong, nobody can help you. If the download stopped halfway through, simply try again. Otherwise provide a better explanation and the necessary info.