when in a venue, text chat will stop functioning, meaning that no text is sent 
or received, though no error messages are produced.  The only way to make text 
chat work again is to re-enter the venue.

I've found that at the same time it stops functioning, an exception is 
generated:

05/22/03 10:37:13 DEBUG Got read handle=_88781b03_p_globus_io_handle_t 
ret=None  n=4 

05/22/03 10:37:13 DEBUG Data len (351,)
05/22/03 10:37:13 DEBUG register returns _883f3e03_p_callbackStruct
05/22/03 10:37:13 DEBUG Got read handle=_88781b03_p_globus_io_handle_t 
ret=None  n=351 

05/22/03 10:37:13 DEBUG finally read enough data, wait=351 buflen=351
05/22/03 10:37:13 ERROR readcallback failed
Traceback (most recent call last):
  File "C:\Python22\Lib\site-packages\AccessGrid\TextClient.py", line 152, in 
readCallbackWrap
    return self.readCallback(arg, handle, ret, buf, n)
  File "C:\Python22\Lib\site-packages\AccessGrid\TextClient.py", line 190, in 
readCallback
    self.handleData(thedata)
  File "C:\Python22\Lib\site-packages\AccessGrid\TextClient.py", line 246, in 
handleData
    self.Output(event.data)
  File "C:\Python22\Lib\site-packages\AccessGrid\TextClient.py", line 126, in 
Output
    self.textOutCallback(text)
  File "C:\Python22\Lib\site-packages\AccessGrid\VenueClientUIClasses.py", 
line 1892, in OutputText
    message, profile = textPayload.data
ValueError: too many values to unpack

===========================================

Subsequent attempts to send text result in the following lines in the log:

05/22/03 10:44:53 DEBUG VenueClientUIClasses.py: User writes: test
05/22/03 10:44:53 DEBUG EVENT --- Input
05/22/03 10:44:53 DEBUG Text Event: Venue: 
000000f531b834e4008c00dd000b0037d1d, Payload: Sender: None, Recipient: None, 
Private: 0, Data: ('test', <AccessGrid.ClientProfile.ClientProfile instance at 
0x018A0400>)