I have a view with 2 actions, delete item and a custom one. It works fine with views 3.3 and VBO 7.x-3.0-rc1+20-dev. I upgraded to views 3.5 and latest stable VBO, and then when I execute an action, it just seems to redirect, and doesn't do anything.
For now I just downgraded the modules and it's working fine. Not sure if this is a views or VBO issue.