Get this error message using My Book live

Hello,
I get this error message using My Book live (S/W 2.0+) to create a safe point on a My Book World (Blue Rings).
The error shows “Your safe point could not be created due to a failed request”.
I want to know about this weird error message. Please help me to fix this issue.
Error
36102- Your safepoint could not be created due to failed request. Please
Try creating your safepoint again.
