Reset Your Preferences. Cmd-Opt-Ctrl-Shift when restarting AI on a Mac or Alt-Crtl-Shift on a PC to reset to the defaults. More Thorough Reset Your Preferences. Quit IllustratorFinder >> Shift Command G~/Library/Preferences/Adobe Illust...

Why can't I select layer illustrator?

Most probably, some of your objects are locked. Try Object > Unlock All ( Alt + Ctrl/Cmd + 2 ) to unlock everthing that's been locked. You can also use the Layers palette to unlock objects or groups. Every object and group has a an 'eye' icon and an empty square in front of its entry in this palette.

How do you unlock a layer in Illustrator?

Hold down Shift+Alt (Windows) or Shift+Option (Mac OS) and choose Object > Unlock All. If you locked all layers, choose Unlock All Layers from the Layers panel menu to unlock them.