poke diamond freezing...help plz

I am playing pokemon diamond using no$gba 2.5c and have gotten through the game basically without any problems. However, I am now experiencing a freezing dilemna AFTER the two-on-two battle against Jupiter and Mars on the peak of Mt. Coronet. The scene progresses until my rival leaves and the view swithes from me to Dialga. then the waves of black stop right where they are at and everything freezes except for the sound. I have tried waiting it out for almost an hour and nothing changes. I have also tried different combinations of emulation options and I cannot seem to get anything to work. It is still freezing up everytime. Please someone help?

 

Try using some of the settings described here. https://www.romulation.org/forum/index.php/topic,4568.0.html

Also, I recommend you upgrade to the latest version 2.6a. http://nocash.emubase.de/n-west-w.zip

 

Easy. You need to speed up it by pressing "+" on you numpad. And don't forget to configure your emulation setting. make it as fast as you can but don't turn off the sound. just make it fast.

First, the event is so hard, i mean really make your NDS emulator goes very slow, about 45%. Just relax and waiting.