diff -uNr metakit-2.4.9.7.orig/tcl/mk4tcl.cpp metakit-2.4.9.7-1unregisterchans/tcl/mk4tcl.cpp
--- metakit-2.4.9.7.orig/tcl/mk4tcl.cpp 2007-06-18 16:05:24.000000000 -0500
+++ metakit-2.4.9.7-1unregisterchans/tcl/mk4tcl.cpp 2014-05-20 00:55:56.857516999 -0500
@@ -737,6 +737,10 @@
MkWorkspace::~MkWorkspace() {
CleanupCommands();
+ for (MkChannel *chan = _chanList; chan; chan = chan->_next) {
+ Tcl_UnregisterChannel(_interp, chan->_chan);
+ }
+
for (int i = _items.GetSize(); --i >= 0;)
delete Nth(i);