<p>Just for the record:</p>
<pre><code>Thread 1 "pharo" hit Breakpoint 5, scavengeReferentsOf (referrer=22055008)
    at /home/alistair/opensmalltalk-vm/opensmalltalk-vm/spur64src/vm/gcc3x-cointerp.c:42158
42158           assert((!(isForwarded(referrer)))
    0x7ffffffa7f80 I SessionManager>launchSnapshot:andQuit: 0x1508860: a(n) SessionManager
    0x7ffffffa7ff0 I [] in SessionManager>snapshot:andQuit: 0x1508860: a(n) SessionManager
    0x7ffffffa8030 I [] in BlockClosure>newProcess 0xef01d8: a(n) BlockClosure
(gdb) call printFrame(0x7ffffffa8030)
    0x7ffffffa8030 is on a free page?!
$2 = 0
</code></pre>
<p>The call frame being on a free page doesn't look good.</p>

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