2.3 won't set smooth.

I have this mesh that I vertex painted , then set smooth but the render comes out unsmoothed. I try again with 2.23 and it renders smooth o.k., so I saved it with 2.23, then reopened it with 2.3 but 2.3 still unsmoothed it. How can I fix this? Should I set smooth before vertex painting?
I just upgraded to 2.31a and now it works fine. Erm… thanks for continuing with the upgrades :stuck_out_tongue:

is this the assumed autosmooth bug in pre 2.31a?

Youre welcome, but this is offtopic :slight_smile: