I’ve seen this issue but have not been able to reliably reproduce. One possible work-around, as kreso reported earlier in this thread (http://developer.anscamobile.com/forum/2010/09/07/cant-build-android-build-button-disabled#comment-6520), is to select your new keystore file in one Corona session, restart Corona, and then enter your password for the keystore in the second session. This has also worked for me once.
As a last resort, clear the Simulator’s preferences: quit Corona, delete ~/Library/Preferences/com.anscamobile.Corona_Simulator.plist, and restart. Go through the motions again: enter the build information, select your keystore file, and enter your password when prompted. This may also get you into a working state.
I opened case 1283 to better track the issue. Thanks for your patience.
Tim [import]uid: 8196 topic_id: 1925 reply_id: 6798[/import]