To install the JT-adapter, do the following steps.
When you install the JT Adapter, it will create a "jt2pv.exe" file in "C:\<installation_path>\ProductView Client\bin". Now you should go to "C:\<installation_path>\Arbortext IsoDraw 7.1\Program\Adapters\JT" and find the "pvad_xlite.prf" file. Within this file, you need to uncomment 2 lines by removing the # symbpls at the beginning. You can open this file with a text editor, such as Notepad ((but first make sure that the file is editable, ie no check mark "read")). These are "Executable" and "Recipe". They should then point to the files:
Executable: C:\<installation_path>\ProductView Client\bin\jt2pv.exe
Recipe: C:\<installation_path>\ProductView Client\recipe\jt2pv_import3d.rcp