With Filestar you can easily convert CRW to EPUB. Accessible directly in your right click menu for single or batch CRW processing. How to convert CRW to EPUB:
1. Download and install the latest version of Filestar. (https://filestar.com)
2. Right click on one or more CRW file(s) on your desktop and select Convert with Filestar.
Type "convert epub" in the search box.
3. Press Run.