iOS project.pbxproj malformed

My app needs some frameworks, so I was trying to use cocoapods, but when did "pod init", appeared an error. The error that appears, indicates that the xcodeproj isn't well constructed. For example:

RuntimeError - [!] Xcodeproj doesn't know about the following attributes {"refType"=>"0"} for the 'PBXFileReference' isa.

or

RuntimeError - [!] Xcodeproj doesn't know about the following attributes {"name"=>"Link Binary With Libraries"} for the 'PBXFrameworksBuildPhase' isa.

After fix this errors by hand (in this cases, removing the attributes), "pod init" works well.

The conclusion is that the pbxproj generated by QT isn't well formed or put something deprecated.