Some Trinidad/ADF components don't work

[christian.bauer]

I have a very trivial Facelets/ADF page. Now migrated to Trinidad, but the problem remains: Some components work fine like af:tree/tr:tree, others don't, with the following kind of message:

<tr:forEach> Tag Library supports namespace: http://myfaces.apache.org/trinidad, but no tag was defined for name: forEach

I have no idea what that means. If anybody has seen that (Google says no) before, what did you do to get it working?

[christian.bauer]

Btw, if I unpack the taglib.xml descriptor, the tag is defined.

[shane.bryzak]

The one time I got that exception, it was because the component class could not be found in the classpath.