Web-Module make

Hello,
just downloaded the new version 4.5, Build 2233.
When now making an existing web module the following error ocurres:
Information: 2 errors
Information: 0 warnings
Error: Error copying 'C:\projects\esm\esm_jdo\dist\esm-jdo.jar' to 'C:\projects\esm\esm_web\tomcat\app\WEB-INF\lib'. Destination is a directory.
Error: Error copying 'C:\projects\esm\esm_web\lib\iframe-web-struts.jar' to 'C:\projects\esm\esm_web\tomcat\app\WEB-INF\lib'. Destination is a directory.
Information: Compilation aborted

Where 'C:\projects\esm\esm_web\tomcat' is the base directory for this project.

This error did not happen with the 4.0.3 version. My Ant scripts still works.

Thanks for any help

Reto Badertscher