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copied!<p>The most likely cause of your problem is that something has not been recompiled. Here's the javadoc description of the <code>IllegalAccessError</code> exception:</p> <blockquote> <p>Thrown if an application attempts to access or modify a field, or to call a method that it does not have access to.</p> <p>Normally, this error is caught by the compiler; this error can only occur at run time if the definition of a class has incompatibly changed.</p> </blockquote> <p>To be more specific, this normally happens when you have classes <code>A</code> and <code>B</code>, where <code>B</code> depends on some members of <code>A</code>. Then you do something like this:</p> <ol> <li><p>You compile <code>A</code>, then <code>B</code>.</p></li> <li><p>Make an incompatible change to <code>A</code> and recompile it <em>without</em> recompiling <code>B</code>. In this case, the change would involve reducing the visibility of some member of <code>A</code> that <code>B</code> uses so that the member should no longer be visible to <code>B</code>.</p></li> <li><p>Run an application that uses <code>A</code> and <code>B</code> and and you will get an <code>IllegalAccessError</code>.</p></li> </ol> <p><strong>EDIT</strong></p> <p>The proxy class that is trying to do the accessing looks like it must have been generated by the Clojure compiler. So maybe there is a Clojure compiler bug ... or maybe you changed the visibility of <code>ArthurFrame</code> after you ran the Clojure compiler. Either way, one possible fix is to change the visibility of the <code>ArthurFrame</code> to <code>public</code>.</p>

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