vmware backup job stay queued

My new install Backup Exec 15 FP3 on windows 2008 R2 SP1.

I try to backup vmware vsphere 5.1 guests.

But one vm cannot backup.

Job can take snapshot and stay queued forever.

I just change transport mode from SAN or NBD but not work.

Job stay "queued" and  if I cancel it stay "cancel pending".

I need to kill beremote process to stop the job then delete the job.

If I don't delete the job, it'll start after restart BE services.