No Sound xl 250

After installing navcore 9.103 (latest hack) All works well but no sounds at all. Any ideas learned ones.

Process:

Format memory
Extract navcore 9.103.???.CAB-navcore-XL
Overwrite with SE_X_Navcore.9.103.539753.Basicpack
Overwrite with X_ttsystem.9.103.539753
Install voices
Install map
Boot then activate

This worked a treat for my dads ONE v4 but no noise on my XL 250. Any help appreciated.

EDIT:
Ok, This navcore http://www.navitotal.com/forums/showthread.php?2273-Start-Navcore-with-newstyle-simplified-menu-for-most-devices works. The only thing I do not like is I cannot turn off the speeding alert sound and leave the rest of alert sounds on. I will try and hack the sound and replace it with a silent sound me thinks. Strange none of the other navcores work correctly with sound.

I can add to this, installed navcore 9205 to my dad's XL250, and now it won't make any sound at all. I'll try the navcore from your edit now and report back.