I keep getting Error 16 when I try to launch the trial version of Lightroom. I'm on Mac 10.9, and I've already uninstalled and reinstalled and followed the instructions about permissions found here: http://helpx.adobe.com/fr/x-productkb/policy-pricing/configuration-error-cs5.html. I would really like to explore this software, but I can't if I can't even open it! I would love any help you can offer me!
I am having the same problem, but am a monthly subscriber and this problem recently occurred.