From the Macromedia TechNote Index:
Macromedia has created a hot fix to address issues with the cfform controls in Macromedia ColdFusion MX 6.1. The updated JAR file resolves the following issues with the cfform applets:
- Required fields in cfform / cfinput are not processed in the order they are defined within the form.
- When more than one image is specified for cftreeitem, the first specified image is displayed for all levels.
- Using cftree and cftreeitem throws Java ClassCastException error.

This is a good fix. Thanks to the MM engineering gurus for this