I am trying to setup a simple disk based backup for our lab vsphere esx servers using a batch file running vcbmounter and I am running into a weird issue. The vcbmounter command to backup the virtual machine works fine if I choose a local drive as the VM backup location(-r option) but if I try to write the backed up VM images to a mapped drive on the proxy server the backup fails with an error that reads "<location X: is not a writeable directory>." I have checked NTFS permissions and gone as far as assigning everyone full control at both the share and NTFS level. Any help resolving this issue is greatly appreciated.