Forum problem after upgrading from 3.8.4 to 4.0.3
 

hello everybody,

from week i upgrade my forum from 3.8.4 to 4.0.3

everything is all right but there is a problem when i select some topics to move them or delete them
it said to me that i never select any correct topics

i,v tried repair database and change the style but the problem still occur

so can any one help me to resolve this issue?