Problems with twisted version 10.0.0

Thanks for your report. The first problem is indeed a bug in the bin/pybridge script, as documented at https://bugs.launchpad.net/ubuntu/+source/pybridge/+bug/580224

I have not managed to replicate your second problem. The development version of the PyBridge client not currently compatible with the PyBridge 0.3 server: are you connecting to a 0.3 server? Furthermore, if you run "pybridge" from a terminal and repeat the steps that cause the error, do you receive any error messages in the terminal?

It seems that these problems are in fact unrelated. The empty window comes from ui/excepthook being broken for reasons unknown to me. The cause of those Program errors seem to be the use of context.reset_clip(), which now requires parameters. It seems, that this patch fixes the problems:

=== modified file 'pybridge/ui/__init__.py'
--- pybridge/ui/__init__.py 2009-12-13 14:49:27 +0000
+++ pybridge/ui/__init__.py 2010-05-25 18:52:54 +0000
@@ -45,7 +45,7 @@
     # Set exception hook to display error dialog.
     import sys
     from excepthook import excepthook
- sys.excepthook = excepthook
+ #sys.excepthook = excepthook

     from manager import wm
     from window_main import WindowMain

=== modified file 'pybridge/ui/canvas.py'
--- pybridge/ui/canvas.py 2007-07-12 15:44:44 +0000
+++ pybridge/ui/canvas.py 2010-05-25 19:04:45 +0000
@@ -134,6 +134,7 @@
         """
         context = cairo.Context(self.backing)
         context.rectangle(x, y, width, height)
+ context.save()
         context.clip() # Set clip region.

         # Redraw background pattern in area.
@@ -151,7 +152,8 @@
             context.set_source_surface(item['source'], pos_x, pos_y)
             context.paint_with_alpha(item['opacity'])

- context.reset_clip()
+ #context.reset_clip()
+ context.restore()
         self.window.invalidate_rect((x, y, width, height), False) # Expose.

@@ -212,9 +214,11 @@
     def _expose(self, widget, event):
         context = widget.window.cairo_create()
         context.rectangle(*event.area)
+ context.save()
         context.clip() # Only redraw the exposed area.
         context.set_source_surface(self.backing, 0, 0)
         context.paint()
- context.reset_clip()
+ #context.reset_clip()
+ context.restore()
         return False # Expected to return False.