Strange thing is I have version 14 and it's working fine, it looks like he re-worked the EQ section in the DSPManager.apk app and it's not playing nice with Sapphire.
That's because the DSP Manager dev website download is made specifically for CM6 not Sapphire.
I got that already, I downloaded version 14 from that very same site a week or two back and it works fine with Sapphire 1.0 even though it was also made specifically for CM6.
I was trying to point out something that changed in version 15 has made it no longer work with Sapphire.
I've compared the two downloads I have, the lib file is the same size, the DSPManager.apk has increased in size from version 14 to 15 so I think it's the culprit.