Lego Indiana Jones split files not working on Rogero?

Hi.

I have a quick question about Indiana Jones: the Original Adventures and Rogero 4.30. I put it on my fat32 external usb drive and therefor had to split the big Game.dat file into 3 smaller files: GAME.DAT.66600, GAME.DAT.66601 and GAME.DAT.66602. When I try the game in Multiman 4.20 I go back to xmb, select the gamedisc and then get a black screen. When i go back to xmb, the Logo, sound and Movie come on, but I can't start the game, always the black screen. I also didn't get the pre-processing message, so I manually set the rights. Rebooted Ps3, but still black screen.

So, did I mess up the splitting, or.. Doesn't Lego Indiana Jones: the Original Adventures work with Rogero 4.30? It's the only game out of about 40 I can't seem to get working, which really bugs me. And the kids are real Lego game fans, so I really would like this one to work :-)

Any suggestions? I used MacHacha and selected HJsplit, files are just onder 2 GB. When I test under MM, it says it found 1 big file which is split into 3. Would appreciate the help. Thanks!!