If I knew how JJ2 was coded, I could probably solve your issue since I can read Assembly, but the best I can help in this is to suggest a different approach. Have you tried running it under compatability settings (and what operating system are you using?), or first launched it and then ran the Plus utility to switch it to JJ2+ while on the main menu? I wasn't able to get it running properly until I did the latter (Windows 7 here).