Thanks again for all your help. THAT was IT!
I changed from bullet to physics and exported from CC3 again, and the tab shows.
I feel like an idiot. (it's not the first time) I don't even know why I changed it to bullet. Doh!

Saved me a ton of work, starting over. Ultimately I may have to anyway just because I don't really know what I'm doing, but I'm learning  so much from here and the tutorials.

Thanks again!

p.s. Whoever invented the particle engine at Iclone deserves a raise.

Glad it worked out for you :)