Stop import of emails

I recently downloaded eM client and it automatically downloaded some of the emails from my previous email client (WLM) but not all so I performed an import however I perhaps did not do this correctly and decided I did not need it anyhow but now everytime I open eM client an error log appears with tens of error reports saying the import could not be completed and no folder is available or something.  how can I stop the import to stop these error messages?