I have a native LyX version running on a Windows computer. When I insert a graphics ".eps", I can see it only when I export my document from .lyx to .pdf. I can neither see my graphics in lyx ("error converting to loadable format")
There are heaps and heaps of similar posts in the archives. Plus fixes. Often described by me. Paul Rubin has also posted lots of Win32-specific solutions. Go searching ;-)
There were some problems with graphics in LyX 1.3.2 for Win. In the actual version 1.3.3 they are solved.
If you already use LyX 1.3.3, assure that you don't use own converters (EPS -> EPS should be the last one in the list under Edit -> Preferences -> Converters).
