I've exported a model/matrix that is only one voxel big. And I have my dae-file. At approximately line 56 there is a tag float_array with id Matrix_1_position-array and a couple of lines down there is an accessor tag with the source attribute Matrix_1_position-array and the application where I import the dae file complains about that line. When I open the file in notepad and add the #-character to the source attribute it will stop complaining.
There are three places in the file where there are source attributes that is missing the #-character, if you search through an exported dae-file you will find several tags with source attribute, some has #-character and some don't.
It's easy to fix using notepad, but it seems like this is a problem that perhaps should be easy enough to fix for you.