I downloaded the LR4 upgrade. LR4 Image shows up on my desktop, dmg icon and READMe shows up, when I double click on dmg, I get message saying unable to open. I am a bit of an idiot. Any suggestions on how to proceed. Using Mac Pro and upgrading from LR3.
Minimum specs for Mac are:
• Multicore Intel® processor with 64-bit support (that's Core 2 Duo and later)
• Mac OS X 10.6.8 (Snow Leopard) or 10.7 (Lion) For either OS
• 2GB of RAM
• 1GB of available hard-disk space
• 1024x768 display
If your machine's above that minimum spec, it would help to have the whole error message.
I've downloaded the file 8 times in the past 3 days, and I got the same result, "invalid checksum" for all of them. The past few times I've downloaded it, it's 411.7 mb. If it was not complete, why is the file size consistent? Adobe lists the file size to be 392.7 mb on their download page, and this is clearly wrong. Someone at Adobe is sleeping at the wheel.
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