[Blender Tutorial]

Did you triangulate things when you exported?

That's a common message when you don't.

I also noted that the latest release of Blender has updated code to the Collada section.

I've not tested to see if some of the many issues were corrected with the Collada import/export.

[Problem converting dae to obj for use in Wings3d]

The FBX Converter is about the quickest, cheapest, and system easy way to convert the Collada format.

Being it's a just a fancy text file?

You can use notepad to create the obj file and the needed mtl file for textures.

If there's a need for an easy converter from Collada to obj?

Aside from the FBX way, one can be done in Python.

[Problem converting dae to obj for use in Wings3d]

AutoDesk has a free converter that works.

Convert to FBX first then convert to obj.

A Search for AutoDesk FBX converter will give you the link.

[other model formats?]

To get .DAE files to import to Blender 2.5X.......

1) Open the DAE file in Notepad

2) Find the line <diffuse>

3) Delete the entire <diffuse> element. It will look something like this:

<diffuse>

<texture texture='Map__123-image' texcoord='CHANNEL0'>

<extra>

<technique profile='MAYA'>

<wrapU sid='wrapU0'>TRUE</wrapU>

<wrapV sid='wrapV0'>TRUE</wrapV>

<blend_mode>ADD</blend_mode>

</technique>

</extra>

</texture>

</diffuse>

(Delete everything from <diffuse> to </diffuse>)

4) Save the file (don't change the DAE format)

5) In Blender 2.5x import the DAE file you've just saved using the importer - File > Import > COLLADA (.dae)

Regards