How To: Get your mouse’s right-click back in OS X 10.7.5
Let’s file this tip under the “things that may only help one other person in the world” category, like my “HOW TO FIX “THE DISC CAN’T BE BURNED, BECAUSE THE DEVICE FAILED TO CALIBRATE THE LASER POWER LEVEL FOR THIS MEDIA” ERROR” article (which actually appears to have helped quite a few of you). Today’s problem is as follows:
After doing a CLEAN install of OS X 10.7.5, you find that your mouse no longer can perform a right click. The Mouse setting in the System prefs is no help, and even swapping out other working mice doesn’t seem to fix it (although some users report that some HP mice are unaffected, Apple’s Mighty Mouse is particularly susceptible to this problem).
Unfortunately we too were hit with this problem at Macenstein Labs when we replaced some Mac Pro hard drives with SSD’s and needed to perform a clean install of OS X (from a USB thumb drive installer we made). Well, after reading 9 pages of posts from people complaining about this problem on the Apple support boards, it turns out the solution comes from a German Apple user named Till von Reumont who was able to get a straight answer from German Apple Support:
“With fresh installs of 10.7.5 the problem is that two files are missing that are needed for the mouse. In my case I could get them from another computer I own that ran Lion and did have the files. To get to the files you need do this:
control-click that file and choose “show contents”
now in the finder window navigate to
In this folder should be two files named
If you don’t find these files, you need to get them and put them in.”
Well, sure enough, our install WAS missing those two files, and sure enough we found them on another Mac in the lab, and we are now right-clicking like fiends! After living with the problem for over a month, it is indescribably refreshing to once again be able to right click on things again. Sorry we can’t post those missing files here, but hopefully you have another Mac-using friend out there you can snag them from. Good luck!