1. Catch TypeError exception when writing to OutputWindow
2. PyShell: shell isn't working due to encoding issues.  Temporarily direct
   exceptions to the terminal.  Also, trap exceptions occurring during write()
   instead of passing.

Checking (2)  in temporarily to aid finding the encoding problem in
IOBinding.py
diff --git a/Lib/idlelib/OutputWindow.py b/Lib/idlelib/OutputWindow.py
index ef155a4..4c07c03 100644
--- a/Lib/idlelib/OutputWindow.py
+++ b/Lib/idlelib/OutputWindow.py
@@ -40,6 +40,8 @@
         if isinstance(s, str):
             try:
                 s = str(s, IOBinding.encoding)
+            except TypeError:
+                raise
             except UnicodeError:
                 # some other encoding; let Tcl deal with it
                 pass
diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
index bfd659c..18ed3aa 100644
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -825,7 +825,7 @@
         self.console = PseudoFile(self, "console", IOBinding.encoding)
         if not use_subprocess:
             sys.stdout = self.stdout
-            sys.stderr = self.stderr
+###            sys.stderr = self.stderr # Don't redirect exceptions, pyshell NG
             sys.stdin = self
         #
         self.history = self.History(self.text)
@@ -1214,7 +1214,8 @@
             OutputWindow.write(self, s, tags, "iomark")
             self.text.mark_gravity("iomark", "left")
         except:
-            pass
+            raise ###pass  # ### 11Aug07 KBK if we are expecting exceptions
+                           # let's find out what they are and be specific.
         if self.canceled:
             self.canceled = 0
             if not use_subprocess: