To diagnose this we still need more info:

1 Does your JAP version copy play on your PS2?

2 What modchip do you use?

3 What reader/burner do you have?

The game is not protected in a way that defeats CDRWin. So we have to try and narrow it down to what you're doing in CDRWin (or its hardware) and what the modchip/Region X combination is doing.

A simple test for your burner (if you haven't been successful with other copies - maybe you have) is to copy your WE5 CD (if it works) with CloneCD. If it doesn't work (which it won't on mine but might on yours because you boot with Region X DVD), move to CDRWin and simply apply the Universal Patcher (www.megagames.com) to the BIN filke and see if that plays. If it does, apply the English patch to the BIN file, burn it back and it should play.

All this is predicated on one dependfency: your JAP version copy plays OK.