Call recording on CyanogenMod.

After trying this call recording app that was posted on r/Android, I found it not working on my GS3 running CyanogenMod, just like all the other call recorder apps I tried.

I think I tried half a dozen call recorders by now. Some work in stock GS3, but none work in cyanogen.

I think the cyanogen kernel is somehow incompatible with call recording. I tried SiyahKernel too but that didn't work either.

Anyone managed to make call recording work on CyanogenMod GS3? If so, how?