ERROR: Couldn't write buffer to path ''

[8Observer8]

I created an animation for cube with one bone in Blender 2.67b (it is for weak laptop). I use this command: COLLADA2GLTF-bin.exe -i cube-animation.dae -o cube-animation.gltf -s. But I get the error: ERROR: Couldn't write buffer to path ''

DAE file: cube-animation.zip

I tried to select both: a cube and a bone but I received this message:

Converting cube-animation.dae -> cube-animation.gltf 
I/O warning : failed to load external entity "cube-animation.dae"
ERROR: Unable to load input from path 'cube-animation.dae' 

I think it cannot be solved because this converter does not support the Blendre 2.67b exports. I will continue to use the DAE format. You can close this issue.

[8Observer8]

I found my mistake. I made only one key without animation. Now I made a complete moving animation and it was converted without problems.

DAE, GLTF, project for Blender 2.67b: cube-animation.zip