SnapCreator is saying it finished successfully.
Does the command SnapCreator is running (shown below) take a backup?
%SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe -psconsolefile "C:\Program Files\NetApp\SnapManager for Exchange\SMEJobLauncher.exe" -command "&{new-backup new-backup -Server 'NGAEXTA1' -ManagementGroup 'Daily' -RetainBackups 8 -RetainUtmBackups 8 -StorageGroup 'Mailbox Database\NGAEXTA1' -UseMountPoint -MountPointDir 'C:\Program Files\NetApp\SnapManager for Exchange\SnapMgrMountPoint' -RemoteAdditionalCopyBackup $False