I had an xterm, a "git gui" and a gvim connected via winswitch from a remote machine. After going away and coming back, only one of the sessions (xterm) could be resumed; new sessions (xterm again) could be started.

Here's a filtered strace on winswitch_server when trying a reconnect:

write(2, "/usr/lib/pymodules/python2.6/gtk-2.0/gtk/__init__.py:57: GtkWarning: could not open display\n  warnings.warn(str(e), _gtk.Warning)\n", 130) = 130
write(2, "/usr/lib/xpra/xpra/xposix/gui.py:15: GtkWarning: IA__gdk_display_get_name: assertion `GDK_IS_DISPLAY (display)' failed\n  _display = gtk.gdk.get_display()\n", 154) = 154
write(2, "Traceback (most recent call last):\n", 35) = 35
write(2, "  File \"/usr/bin/xpra\", line 7, in <module>\n", 44) = 44
write(2, "    ", 4) = 4
write(2, "xpra.scripts.main.main(__file__, sys.argv)\n", 43) = 43
write(2, "  File \"/usr/lib/xpra/xpra/scripts/main.py\", line 232, in main\n", 63) = 63
write(2, "    ", 4) = 4
write(2, "run_client(parser, options, args, mode)\n", 40) = 40
write(2, "  File \"/usr/lib/xpra/xpra/scripts/main.py\", line 367, in run_client\n", 69) = 69
write(2, "    ", 4) = 4
write(2, "from xpra.client import XpraClient\n", 35) = 35
write(2, "  File \"/usr/lib/xpra/xpra/client.py\", line 25, in <module>\n", 60) = 60
write(2, "    ", 4) = 4
write(2, "from xpra.platform.gui import ClientExtras\n", 43) = 43
write(2, "  File \"/usr/lib/xpra/xpra/platform/gui.py\", line 16, in <module>\n", 66) = 66
write(2, "    ", 4) = 4
write(2, "from xpra.xposix.gui import *\n", 30) = 30
write(2, "  File \"/usr/lib/xpra/xpra/xposix/gui.py\", line 16, in <module>\n", 64) = 64
write(2, "    ", 4) = 4
write(2, "assert _display, \"cannot open the display with GTK, is DISPLAY set?\"\n", 69) = 69
write(2, "AssertionError", 14) = 14
write(2, ": ", 2) = 2
write(2, "cannot open the display with GTK, is DISPLAY set?", 49) = 49
write(2, "\n", 1) = 1

Following the instructions on ​http://winswitch.org/downloads/debian-repository.html?dist_select=oneiric

I get this error:

W: Failed to fetch http://winswitch.org/dists/dists/oneiric/main/binary-i386/Packages  404  Not Found

E: Some index files failed to download. They have been ignored, or old ones used instead.

I think 'dists' is appearing somewhere it shouldn't (see the dists/dists) above.

it seems to me that the dependencies in the winswitch debian repository are broken.. there are new versions of the packages xpra & python-wimpiggy (0.3.1-1) but to upgrade xpra he wants to remove winswitch and to upgrade python-wimpiggy he wants to remove winswitch & xpra