Cvx error on mosek

I just downloaded CVX 3beta and am using mosek. However, I am getting this error:

Reference to non-existent field ‘sol’.

Error in cvx_mosek

Error in cvx_solve (line 405)
[ x, status, tprec, iters ] = shim.solve(
At, b, c, cones, params );

Error in cvx_finish

Error in cvx_end (line 11)

I have no idea what the error is about?
Thanks very much for any help!

BTW, I am running on windows 10 matlab 2016b.