It looks like most people are using blender to export their models to second life, I know you said you tried baking in blender, but if you exported the dae from 3ds try blender or vice-versa if your exported originally from blender.
Honestly I hadn't tried exporting the DAE from different softwares, since the model is triangulated i didn't really think it'd have any effect, as it imports into various other softwares flawlessly, but i can't really say I've tried everything until I have done so. Exported from 3DS as DAE Exported from 3DS as FBX then…
I've spent days trying to resolve these problems so i figure if anywhere has any semblance of a solution, it's polycount. I'm a student artist using Second Life as a platform since it's easy to collaborate on. Anyway, the problem: (picture speaks a thousand words) (uploaded image is a JPG for forum friendliness, i realize…