class com.microfocus.ant.TypeFileList cannot be found

Hi,

I'm trying to build a project using ant. For that I started the "enterprise developer command prompt". Then I invoked:

ant -f .cobolBuild

This gives me:

C:\projects\>ant -f .cobolBuild
Buildfile: C:\projects\.cobolBuild

BUILD FAILED
C:\projects\.cobolBuild:3: typedef class com.microfocus.ant.TypeFileList cannot be found
 using the classloader AntClassLoader[]

Total time: 0 seconds

How can I resolve this?

Thanks.