well i upgraded from 12.x to 15.x due to a Power Stack Issue...so thats not really an option for me. what hardware version do you have? could it be a Problem with that?

Hello, did anyone ever get a Reply from TAC to this? I updated a 3570X Stack Yesterday from 12.2.58SE2 toSwitch Ports Model              SW Version            SW Image------ ----- -----              ----------            ----------*    1 54    WS-C37...