I´m getting this error in XCode:
2013-08-23 14:36:18.284 Tell The DJ[14955:c07] ERROR: Plugin \'Device\' not found, or is not a CDVPlugin. Check your plugin
Deleting the platforms/ios folder is not a solution for me as all manual customizations to the xcode project will be lost.
But there is a simple way around:
In XCode, goto Build Phases -> open the Compiled Sources dropdown. Click + and add the missing plugin .m file that should be in your Plugins directory (but is missing from the compiled sources).
This solution came from another stack overflow answer, here: https://stackoverflow.com/a/21148428/80254
Another alternative:
In xcode make sure the source files of the plugin has the 'target membership' settings set: In File-Explorer go to Plugins > CDVDevice.m and check if there is a tick next to your app name at "target membership" on the right side of xcode window. This actually does the same as the other solution but is a bit more convenient.
From here: https://stackoverflow.com/a/20576744/80254