"BlockLevelVolumeCloneMgr::CloneVolume: Detected a write error during the cloning of volume \WindowsBitmapDriverVolumeId=[59-4E-26-28-00-7E-00-00-00-00-00-00]. Error: 37409 (type: 1, code: 2338)".
Not sure if it helps with P2V (my guess it would). I encountered a similar error, differs only type & code numbers, using PC Migration Agent.
Using two slightly different revisions of Migration Agent (both are version 5.1.0), the newer revision did work while the older one didn't (i.e. gave the above error). What VMWare did on the newer revision is to warn user upfront that UAC (on Windows) is turned on and this should be off for the migration (or clone) to be successful.
So if your P2V software doesn't warn you on this, you can manually turn of UAC yourself (for instance on Win 7 you could do as per: Turn User Account Control on or off - Microsoft Windows Help, or Go Regedit -> HLM\Software\Microsoft\Windows\CurrentVersion\Policies\System and set the DWORD 'EnableLUA' to '0')