The "Windows 7.vmdk" file is of type "monolithicSparse" meaning an individual file and because the area of the HDD the file resides contains bad blocks the file did not copy during the clone and is not present. According to info in the original .tgz support bundle this file is 48046276608 bytes (~ 44 GB).
You have a few options to attempt to recover to one degree or another.
You could attempt to boot the Virtual Machine with an appropriate CD/DVD/ISO Image of a Live OS in an attempt to copy and User Data off of it. (Of if you have VMDKMounter installed, you could mount the virtual hard disk and copy User data via Finder.)
You could attempt to get a copy of using ddrescue from a Terminal. You may not be able to get the entire file however ddrescue could copy most of it if it can't coax the info off the bad blocks although this may be good enough if the info in the bad blocks isn't mission critical to the operation of the Guest OS or may be more easily repairable after the fact.
ddrescue is not a part of OS X and I had to download the source code and compile it on my system. If you don't have Developer Tools installed like a gcc compiler and make or Xcode I cam upload the version I compiled on my system. You might be able to find a compiled copy for OS X on the Internet, I don't know for sure as I prefer to compile from source code on my own system.
If the VM is bootable and usable to enough degree that you could install VMware vCenter Converter Standalone you might be able to create a new VM from within Windows 7. Or if you have appropriate software on a Live OS CD/DVD/ISO Image to create and Image of the vHDD skipping bad blocks, as an example I have used Symantec Norton Ghost from WinPE to image defective HDD's getting all that could be gotten and in many cases the bad blocks were not uncritical locations and was able to get a working system out of it, etc.
Message was edited by: WoodyZ - Added "original" in front of ".tgz file" as you posted another while I was writing my last reply. Image may be NSFW.
Clik here to view.