Stop "developer tools access needs to take control of another process for debugging to continue" alert
There's a much simpler solution for this. Try running the following command:
sudo /usr/sbin/DevToolsSecurity --enable
Per Zev Eisenberg's answer, reinstalling Xcode 4.2.1 worked. However, it might be easier to just patch the /etc/authorization file with the following diff.
<key>system.privilege.taskport.debug</key> <dict> <key>allow-root</key> <false/> <key>class</key>- <string>user</string>+ <string>rule</string> <key>comment</key> <string>For use by Apple. WARNING: administrators are advised not to modify this right.</string> <key>default-button</key> <dict> ... </dict> <key>default-prompt</key> <dict> ... </dict>- <key>group</key>- <string>_developer</string> <key>shared</key> <true/>- <key>timeout</key>- <integer>36000</integer>+ <key>k-of-n</key>+ <integer>1</integer>+ <key>rule</key>+ <array>+ <string>is-admin</string>+ <string>is-developer</string>+ <string>authenticate-developer</string>+ </array> </dict>