W20140826-20:05:23.642(-7)? (STDERR) /Volumes/System/Users/<user>/.meteor/packages/meteor-tool/.1.0.25.2ltu8i++os.osx.x86_64+web.browser+web.cordova/meteor-tool-os.osx.x86_64/dev_bundle/lib/node_modules/fibers/future.js:173
W20140826-20:05:23.642(-7)? (STDERR) 						throw(ex);
W20140826-20:05:23.642(-7)? (STDERR) 						      ^
W20140826-20:05:23.647(-7)? (STDERR) Error: 
W20140826-20:05:23.647(-7)? (STDERR) 
W20140826-20:05:23.648(-7)? (STDERR)     Sorry! The cmather:iron-{x} packages were migrated to the new package system with the wrong name, and you have duplicate copies.
W20140826-20:05:23.648(-7)? (STDERR)     You can see which cmather:iron-{x} packages have been installed by using this command:
W20140826-20:05:23.649(-7)? (STDERR) 
W20140826-20:05:23.649(-7)? (STDERR)     > meteor list
W20140826-20:05:23.650(-7)? (STDERR) 
W20140826-20:05:23.651(-7)? (STDERR)     Can you remove any installed cmather:iron-{x} packages like this:    
W20140826-20:05:23.651(-7)? (STDERR) 
W20140826-20:05:23.651(-7)? (STDERR)     > meteor remove cmather:iron-core
W20140826-20:05:23.652(-7)? (STDERR)     > meteor remove cmather:iron-router
W20140826-20:05:23.652(-7)? (STDERR)     > meteor remove cmather:iron-dynamic-template
W20140826-20:05:23.652(-7)? (STDERR)     > meteor remove cmather:iron-dynamic-layout
W20140826-20:05:23.653(-7)? (STDERR)     
W20140826-20:05:23.653(-7)? (STDERR)     The new packages are named iron:{x}. For example:
W20140826-20:05:23.653(-7)? (STDERR) 
W20140826-20:05:23.653(-7)? (STDERR)     > meteor add iron:router
W20140826-20:05:23.654(-7)? (STDERR) 
W20140826-20:05:23.654(-7)? (STDERR)     Sorry for the hassle, but thank you!    
W20140826-20:05:23.654(-7)? (STDERR) 
W20140826-20:05:23.655(-7)? (STDERR)   
W20140826-20:05:23.655(-7)? (STDERR)     at Iron (packages/iron:core/lib/version_conflict_error.js:2)
W20140826-20:05:23.655(-7)? (STDERR)     at /Data/<user>/Documents/code/clubchat/.meteor/local/build/programs/server/packages/iron:core.js:40:4
W20140826-20:05:23.655(-7)? (STDERR)     at /Data/<user>/Documents/code/clubchat/.meteor/local/build/programs/server/packages/iron:core.js:336:3
W20140826-20:05:23.656(-7)? (STDERR)     at /Data/<user>/Documents/code/clubchat/.meteor/local/build/programs/server/boot.js:161:10
W20140826-20:05:23.656(-7)? (STDERR)     at Array.forEach (native)
W20140826-20:05:23.656(-7)? (STDERR)     at Function._.each._.forEach (/Volumes/System/Users/<user>/.meteor/packages/meteor-tool/.1.0.25.2ltu8i++os.osx.x86_64+web.browser+web.cordova/meteor-tool-os.osx.x86_64/dev_bundle/lib/node_modules/underscore/underscore.js:79:11)
W20140826-20:05:23.656(-7)? (STDERR)     at /Data/<user>/Documents/code/clubchat/.meteor/local/build/programs/server/boot.js:82:5