Backup failed for Cisco 3750x_Stack

Backup failed for Cisco 3750x_Stack

We have successfully added and tested credentials for stack of 6xCisco_3750x following DeviceExpert help example Cisco IOS device - directly entered into enable mode. But all our tries to backup it are failed. We've tried SSH-TFTP and SSH protocols for backup with the same result - Failure Response(see screenshot). It seems that DevExp tries to do backup twice: first time success and second time (after excess entering into enable mode) - failed. 

Why does it try to enter in enable mode while we set credential as directly entered into enable mode?
Can anybody backup 3750_stack?




                New to ADManager Plus?

                  New to ADSelfService Plus?