[Vnc2swf-users] pyvnc2swf fpstack assertion error

[Andrea F. <ak...@be...>]

I am trying to make a video recording a Pyro robotics simulation using 
pyvnc2swf. It always stalls between the first and second minute, and I 
get the following trace:

Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/lib/python2.4/lib-tk/Tkinter.py", line 1345, in __call__
    return self.func(*args)
  File "vnc2swf.py", line 225, in record
    self.client.close()
  File "/home/andrea/pyro/pyvnc2swf-0.8.2/rfb.py", line 525, in close
    RFBProxy.close(self)
  File "/home/andrea/pyro/pyvnc2swf-0.8.2/rfb.py", line 463, in close
    self.fb.close()
  File "/home/andrea/pyro/pyvnc2swf-0.8.2/rfb.py", line 814, in close
    self.stream.close()
  File "/home/andrea/pyro/pyvnc2swf-0.8.2/output.py", line 482, in close
    self.writer.write_file(self.output_frames)
  File "/home/andrea/pyro/pyvnc2swf-0.8.2/swf.py", line 708, in write_file
    assert not self.fpstack, 'nonempty fpstack: %r' % self.fpstack
AssertionError: nonempty fpstack: [<open file 'output.swf', mode 'wb' at 
0xb7c732f0>]

I can stop recording before this happens and create .swf and html files, 
although the second time through the loop the graphics don't refresh 
properly. I can record the session without starting Pyro. I thought it 
might be a permission problem and added full r/w permissions to any file 
and directory related to my Pyro session (did not help), but since I can 
create the files if they're very short, this should not be related. I'm 
using the default shape mode to record, and have set up the session 
exactly as in the instructions.

I ran it with the debug option, but couldn't discern anything from the 
log files.

Has anyone seen this problem? I've searched the Pyrobot, python, and 
pyvnc2swf archives/websites and have had no luck on Google - I'm not 
really sure what I'm looking for, though. I have also dropped a note to 
Pyrobot users.

Thanks.
Andrea