Ok, I joined them all into one object and it worked! I wasn't aware I had to do this, so something new learned already (As well as how to join objects) Thanks
Though my concern now is texturing. With them unjoined I could have easily selected each one and textured it in SL (Either with a simple texture or uv map, whatever) but now they are one item, I won't be able to do that? I had a quick peek at the UV editor for the first time (Both in Maya and Blender) and with that many bangles, it sort of looks a mess and impossible task. Would it be better to upload the bangles I want to use as separate objects in SL? since there were several shapes and sizes.. and then 'arrage' them in SL and eventually link items there?