Compile errors => What Unity version to use ?

[GameKitten]

Im trying to use this, 

I follow the softbody character setup http://obi.virtualmethodstudio.com/tutor...tbody.html

when i press Edit Particles, there is this error :

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Also when i add the particle renderer component :

it shows particles on the surface of the object but no particles inside is this normal ?

I need the softbody volume, not just surface because that sucks hard, can you tell me that this softbody is volumetric, if not i will ask a refund asap.

I hope the particles inside of the volume are hidden for performance reasons. And also the particle renderer script makes the editor run slow. I have a gtx 970.
I used Nvidia Flex plugin and their voxelized softbody has particles inside visible. I need confirmation that this is also the case in obi softbody.


Here on this screenshot i moved the softbody on the side to show the particles.