Copy-paste continuously displays a window error

[pacolvr]

Version: Ubuntu 11.04 (new install).

Acctions:

1- Start Inkscape
2- Create a rectangle or an other shape
3- Push CRT+C or Menu->Edit->Copy
4- Show window error like this

UniConvertor failed:

No plugin-type information in /usr/lib/pymodules/python2.7/uniconvertor/app/plugins/Filters/__init__.py
No plugin-type information in /usr/lib/pymodules/python2.7/uniconvertor/app/plugins/Filters/__init__.py
Cannot load plugin module sk1saver
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/uniconvertor/app/plugins/plugins.py", line 73, in load_module
    desc)
  File "/usr/lib/pymodules/python2.7/uniconvertor/app/plugins/Filters/sk1saver.py", line 249, in <module>
    from app.Graphics.image import CMYK_IMAGE
ImportError: cannot import name CMYK_IMAGE
When importing plugin sk1saver
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.7/uniconvertor/app/plugins/plugins.py", line 190, in __call__
    module = self.load_module()
  File "/usr/lib/pymodules/python2.7/uniconvertor/app/plugins/plugins.py", line 73, in load_module
    desc)
  File "/usr/lib/pymodules/python2.7/uniconvertor/app/plugins/Filters/sk1saver.py", line 249, in <module>
    from app.Graphics.image import CMYK_IMAGE
ImportError: cannot import name CMYK_IMAGE
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/pymodules/python2.7/uniconvertor/__init__.py", line 88, in uniconv
    saver(doc, output_file)
  File "/usr/lib/pymodules/python2.7/uniconvertor/app/plugins/plugins.py", line 194, in __call__
    % {'name':self.module_name})
app.events.skexceptions.SketchError: Cannot load filter sk1saver

And repeat this windows error from 1 or 2 seconds each.

[su_v (suv-lp)]

Linking as duplicate to bug #418242 “Incorrect call to output plugins (with persistent error message) on copy”. Please add a comment here and revert the duplicate status if you don't agree and think this was done in error.