I'm the only one with this issue? After upgrade of my ESXi host to 5.1 the OnTap Simulator 8.1.1 no longer work. I only get the follwoing error:   Cannot open the disk '/vmfs/volumes/<id>/vsim-DOT811-7m/DataONTAP-sim.vmdk' or one of the snapshot disks it depends on. The system cannot find the file ...</id>