I have the same problem with LG model BH10LS30. Burns for Win 7 64 Windows Explorer when copying files to it, but not DVDA Pro 5.2 or VP10d 64bit.
I've tried suggestions from googling the problem including: deleting the "Upper Limits" with regedit, MS's DVD/CD online fixer, unchecking "use legacy disc drivers" in DVDA Preferences/Burning.
Still, when I click to detect it from Multimedia Devices VP & DVDA go into deep freeze. Old Philips PATA DVD burner works fine.
Considering ebaying it & getting Pioneer BDR-206DBKS. Anyone use that one?