[Need Help] CM11 - Kitkat 4.4..4 for Trend Plus (S7580) topic

I know one guy name SandPox is trying to develop CM11 (4.4.4) for Samsung Galaxy Trend Plus (S7580). But there many bugs. He stucked with a big bug "No sound during a call". He's totally stuck it out. So I hope someone can help him, and help S7580's users too. :(
Here is the link to that topic: Cyanogenmod 11 for S7580
Please help usssss :crying: