Direct Export from Blender
From Horde3D Wiki
Unfortunately, Blender's built-in Collada exporter is not fully compatible with Horde's ColladaConverter tool.
A new exporter is under development in the Community SVN Branch, and can be found at the links below. Currently the exporter does export animations, but only in special configurations.
The new exporter is based on a python script for blender. To use it just save the Horde3DExport.py file to your Blender's .blender\scripts directory. After that you may have to restart your Blender application.
After restarting Blender there is a new Option Horde3D in the Export menu.
If you have experience with Blender and Python and want to help improving the exporter, feel free to post your comments in the forum's thread.