Hi Dennis....
Thanks for looking into this for us. Please note that we had privilege level 15 on vtys 0 4 and was able to access enable mode prior to the IOS upgrades. We were stuck in user mode thereafter.
The previous IOS for C2960 was c2960s-univ...
Sorry guys! I know this is an old post but I recently had this problem on two different devices at different times. I upgraded IOS for C2960 stack and later in the week 3560E. After the upgrade and subsequent reload we had no access to enable mode. T...