I had quite a bit of trouble finding a working link for this, ultimately got an outdated link from the forum which didnt work, corrected it to current version and then it worked. Made mirror at Mediafire.

KarmaCoin v0.8.6.2.4-win32 Mirrors

Orig Link http[Suspicious link removed]
MediaFire http://www.mediafire.com/download/l9j2aw2hijwh4f8/karmacoin-0.8.6.2.4-win32-setup.rar