Hello Arkadiusz,
Is it possible you have more versions of SketchUp on your machine? Make sure you do the Window>Extension Manager and ‘Uninstall’ ConDoc. Deleting the folder would work as a secondary step to make sure all instances are removed.
Make sure there’s not another folder in your TEMP or DropBox where you’re pointed to gather ConDoc Resources (as we did in ConDoc 3). This is not necessary with ConDoc 4 and 4.5; all the resource templates are built-into the plugin.
You can also to a search on your computer for “ConDoc” and delete any relevant folders relating to the plugin.
I would restart your computer as well to be safe.