a6bb6589_seUS_Todo_Backup__online_help___Meaning
[Error Codes] 0X*****272 [Error Codes_2] 0X*****501 [Meaning_3] Selected target partition is currently in use by another application, if you want to recover to this partition from tape, please boot Pre-OS manually to recover. [Meaning] 
Failed to allocate memory (new failed. Insufficient memory).
Error Code list of EaseUS Todo Backup- online help.
Meaning