I tried yoour new phexstart.bat:
Change the file to read as follows:
start /D"C:\Program Files\phex" javaw -cp . StartPhex
and got invalid switch /D"C:\Program , then I tried adding a space as follows: Change the file to read as follows:
start /D "C:\Program Files\phex" javaw -cp . StartPhex
and then got invalid switch /D

I'm Ed from before in this same thread

any ideas?
Ed