error dialog box appears when using Copy

[Clay McGrew]

Every time the Copy function is used, both from the menu and by ctr+c, an error dialog box appears. If I click OK on it and the dialog box which follows it, I can still Paste the copied selection. The message is as follows:

Inkscape has received additional data from the script executed. The script did not return an error, but this may indicate the results will not be as expected.

UniConvertor failed:

Cannot list directory /home/ctmcgrew/.uniconvertor:[Errno 2] No such file or directory: '/home/ctmcgrew/.uniconvertor'
ignoring it in font_path
Cannot list directory /home/ctmcgrew/.uniconvertor:[Errno 2] No such file or directory: '/home/ctmcgrew/.uniconvertor'
ignoring it in font_path
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

The above message is often followed by another dialog box:

This extension requires at least one non empty layer.

[Clay McGrew (ctmcgrew)]

I am using Inkscape 0.48.1 r9760.

[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 these are different issues.