I just purchased Adobe Lightroom 5 on my 15 inch MBP and cannot get it to function properly because I keep getting "an error occurred when attempting to change modules" message. I have updated Lightroom and tried other options, but still nothing has worked for me. I have been trying to re-create the preference file; however, I can not find one of those preference files to begin with. I'm brand new to Lightroom so I'm not sure how to do some other options for solutions that other forums have offered. Is there anyone who can offer advice to fix this issue? Thank you!