xpra v0.14.8 docker error

$ xpra --ssh="ssh -p 49153" attach ssh:docker@192.168.1.11
2014-10-05 21:46:35,455 argb module is missing, cannot support alpha channels
2014-10-05 21:46:35,484  cannot import enc_vpx (vpx encoder): /usr/lib/python2.7/dist-packages/xpra/codecs/vpx/encoder.so: wrong ELF class: ELFCLASS32
2014-10-05 21:46:35,485  cannot import dec_vpx (vpx decoder): /usr/lib/python2.7/dist-packages/xpra/codecs/vpx/decoder.so: wrong ELF class: ELFCLASS32
2014-10-05 21:46:35,486  cannot import enc_x264 (x264 encoder): /usr/lib/python2.7/dist-packages/xpra/codecs/enc_x264/encoder.so: wrong ELF class: ELFCLASS32
2014-10-05 21:46:35,487  cannot import csc_swscale (swscale colorspace conversion): /usr/lib/python2.7/dist-packages/xpra/codecs/csc_swscale/colorspace_converter.so: wrong ELF class: ELFCLASS32
2014-10-05 21:46:35,488  cannot import csc_cython (cython colorspace conversion): /usr/lib/python2.7/dist-packages/xpra/codecs/csc_cython/colorspace_converter.so: wrong ELF class: ELFCLASS32
2014-10-05 21:46:35,489  cannot import dec_avcodec (avcodec decoder): /usr/lib/python2.7/dist-packages/xpra/codecs/dec_avcodec/decoder.so: wrong ELF class: ELFCLASS32
2014-10-05 21:46:35,529 failed load posix keyboard bindings: /usr/lib/python2.7/dist-packages/xpra/x11/bindings/keyboard_bindings.so: wrong ELF class: ELFCLASS32
2014-10-05 21:46:35,736 xpra client version 0.14.8
2014-10-05 21:46:35,908 csc module csc_swscale could not be loaded: /usr/lib/python2.7/dist-packages/xpra/codecs/csc_swscale/colorspace_converter.so: wrong ELF class: ELFCLASS32
2014-10-05 21:46:35,908 csc module csc_cython could not be loaded: /usr/lib/python2.7/dist-packages/xpra/codecs/csc_cython/colorspace_converter.so: wrong ELF class: ELFCLASS32
2014-10-05 21:46:35,909 video decoder dec_avcodec could not be loaded: /usr/lib/python2.7/dist-packages/xpra/codecs/dec_avcodec/decoder.so: wrong ELF class: ELFCLASS32
2014-10-05 21:46:35,909 video decoder dec_vpx could not be loaded: /usr/lib/python2.7/dist-packages/xpra/codecs/vpx/decoder.so: wrong ELF class: ELFCLASS32
2014-10-05 21:46:35,910 OpenGL disabled: Ubuntu 12.04 is too buggy
xpra main error:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/xpra/scripts/main.py", line 103, in main
    return run_mode(script_file, err, options, args, mode, defaults)
  File "/usr/lib/python2.7/dist-packages/xpra/scripts/main.py", line 761, in run_mode
    return run_client(error_cb, options, args, mode)
  File "/usr/lib/python2.7/dist-packages/xpra/scripts/main.py", line 1116, in run_client
    app.init_ui(opts, extra_args)
  File "/usr/lib/python2.7/dist-packages/xpra/client/gtk_base/gtk_client_base.py", line 51, in init_ui
    UIXpraClient.init_ui(self, opts, extra_args)
  File "/usr/lib/python2.7/dist-packages/xpra/client/ui_client_base.py", line 264, in init_ui
    self.keyboard_helper = self.make_keyboard_helper(opts.keyboard_sync, opts.key_shortcut)
  File "/usr/lib/python2.7/dist-packages/xpra/client/gtk_base/gtk_client_base.py", line 151, in make_keyboard_helper
    return GTKKeyboardHelper(self.send, keyboard_sync, key_shortcuts)
  File "/usr/lib/python2.7/dist-packages/xpra/client/gtk_base/gtk_keyboard_helper.py", line 28, in __init__
    self.update()
  File "/usr/lib/python2.7/dist-packages/xpra/client/gtk_base/gtk_keyboard_helper.py", line 56, in update
    self.query_xkbmap()
  File "/usr/lib/python2.7/dist-packages/xpra/client/keyboard_helper.py", line 251, in query_xkbmap
    self.xkbmap_print, self.xkbmap_query, self.xkbmap_query_struct = self.keyboard.get_keymap_spec()
  File "/usr/lib/python2.7/dist-packages/xpra/platform/xposix/keyboard.py", line 104, in get_keymap_spec
    v = self.get_keymap_spec_using_setxkbmap()
  File "/usr/lib/python2.7/dist-packages/xpra/platform/xposix/keyboard.py", line 91, in get_keymap_spec_using_setxkbmap
    return xkbmap_print, xkbmap_query, xkbmap_query_struct
UnboundLocalError: local variable 'xkbmap_query_struct' referenced before assignment