There is the following message when you try to import *.cdr files and you can't do this.

Message:
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.

You need to install the UniConvertor software.
For GNU/Linux: install the package python-uniconvertor.
For Windows: download it from
https://sk1project.net/modules.php?name=Products&product=uniconvertor&op=download
and install into your Inkscape's Python location