I've found some old threads on option and shift keys not working in Photoshop, Illustrator and InDesign, but their fixes didn't help me, and some of the threads are quite old, so I thought I should start a new one. I'm basically having the same problem as justine.dechaine did on Jan. 21, 2016, but updating the apps didn't solve it for me. I think the problem is related to my recent upgrade to El Capitan. I borrowed this text from Justine's earlier thread, as it describes my problem, too: "Key commands not working in Illustrator, InDesign or Photoshop. Holding shift does not constrain proportions of frame Holding cmd does not resize contents of frame; only frame itself Space bar does not activate hand tool Cmd + space does not activate zoom Holding shift with the line tool does not draw a straight line Holding shift while moving an object doesn't keep that object at the same horizontal / vertical spot Holding option doesn't copy an object" I also can't make a selection in Photoshop--clicking on the layer while holding the command key does not select the contents of the layer. Basically, I cannot get my work done until this problem is fixed. In Illustrator, I can't even select two objects at the same time. I've tried changing keyboards, updating my Wacom driver (but I realized later the problem has more to do with the keyboard than the drawing tablet), restarting, turning off all web browsers, repairing my hard drive with Disk Utility, checking for El Capitan updates--nothing has helped. Thanks for any tips you can give.
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