Error building to iPhone simulator

When trying to build my game in XCode for iPhone Simulator 6.0 I get the following error:

Undefined symbols for architecture i386: 
"_UnityIPhoneRuntimeVersion", referenced from: 
_PostToServices_GetUnityVersion in PostToServicesUtil.o 
ld: symbol(s) not found for architecture i386

Been trying to find the solution to this, but no one else seems to have encountered this error, OR everyone else knows something I don´t :stuck_out_tongue:

Any ideas what this means anyone?

Tracked down the error. It was from a iOS native asset we implemented. Contacted the developer of the asset and got a fix.