How to enable classifieds for Codestyling localization plugin?

Hi, I would like to translate Classifieds plugin to slovak language using Codestyling localization plugin, it's much better than changing source files. Translation plugin works OK with other plugins or themes but no with Classifieds - I don't see any changes and it's because of texdomain (line 375 in core.php?).

Here is what Codestyling plugin says about this trouble:
"Warning: The actual loaded translation content contains mixed textdomains and is not pure translateable within one textdomain.
It seems, that there is code contained extracted out of other plugins, themes or widgets and used by copy & paste inside some source files.
The affected unknown textdomains are: wpmudev, twentyten, custompress, classifieds."

How can I fix this if I want to translate with Codestyling localization?