When I tried to build project from command line, I got the following message from xcodebuild:
xcodebuild[10713:1209993] [MT] PluginLoading: Required plug-in compatibility UUID F41BD31E-2683-44B8-AE7F-5F09E919790E for plug-in at path '~/Library/Application Support/Developer/Shared/Xcode/Plug-ins/SparkInspectorXcodePlugin.xcplugin' not present in DVTPlugInCompatibilityUUIDs
I installed Spark Inspector a year ago, and deleted it about 6 months ago.
Is there a way to reset Xcode so that it doesn't know there is such a plugin.
So far I have tried re-install Xcode, delete all the reference data. They didn't work.
If you're looking to uninstall the plugin:
rm -rf ~/Library/Application\ Support/Developer/Shared/Xcode/Plug-ins/PluginName.xcplugin
rm -rf ~/Library/Application\ Support/PluginName
Instructions pulled from http://alcatraz.io/