Default Gear manager immediate force close

I can't find anything on this.

So I'm trying to pair my Galaxy S5 with the Gear2 - it can see the Gear 2 on bluetooth, but there's no prompt to pair.

Gear Manager pops up an error message very quickly and force closes.

I don't particularly want to have to sign up with a samsung account and/or use their app store on my phone - is there any way around this?