Expected specifier-qualifier-list before ... only in classes in a certain folder
<p>Classes in my iPhone project are organised within folders on the filesystem, these correspond to groups (for each folder) in xcode.  My problem is that there seems to be a particular class which classes in a particular group/folder cannot make reference to; the compiler complains of "Expected specifier-qualifier-list...".</p>

<p>This happens on any class within this group, and also when I create a new class within this group and try and import the offending class like so:</p>

<pre><code>#import &lt;Foundation/Foundation.h&gt;
#import "MyClass.h"

@interface TryingToImport : NSObject {
    MyClass *myClass; // Expected specifier-qualifier-list before 'MyClass'
}
</code></pre>

<p>Creating an identical class in any other group works OK.</p>

<p>I understand this error message is usually due to cyclical import references, I have checked over and over and there don't seem to be any of these.  I assume I have inadvertantly configured the offending group to be different to the others in some way but I can't figure out how.  </p>

<p>Help please!</p>
