Apple Mach -O Linker (Id) Error?

So, the problem has been resolved.

What happened was when I imported the reachability files over into my build something funny was happening and somehow I deleted the reachability files that were already in my build being used by the "all seeing I" ASIHTTPRequest methods I was using for transporting my data... which messed everything up.

So long story short I replaced the files and everything is working fine and I also found out that ASIHTTPTequest is taking care of the reachability for me :) how cool is that.

Check if SystemConfiguration is linked properly. Anyway, clean up your code:

+ (BOOL)reachable {
    Reachability *r = [Reachability reachabilityWithHostName:@"enbr.co.cc"];
    NetworkStatus internetStatus = [r currentReachabilityStatus];
    return internetStatus != NotReachable;
}

And then just call [Reachability reachable] wherever you need. This also fixes a memory leak you have.

Just to add to this, it happened me after I regenerated managed subclasses and it didn't actually overwrite the existing ones but just made new duplicates. I just deleted both and regenerated and it was all good.