OS X 10.6.6 and “adb devices” fails to list android devices

Question

adb devices was working fine last year, but after upgrades and new software installs, adb devices no longer recognizes USB attached Android devices.

Her

Answer 1

I was having the same issue and tried connecting as charge only, but that didn't solve the problem, then unchecked the "Unknown sources" option to allow installation of non-market applications, tried it again and it recognized the device. I'm running android 2.2.3.