What version of xbmc do you have, check by going system and then underneath system info and at the bottom right corner should have the name and number....ie 12.3 Frodo or 13.2 Gotham. If its Frodo then its now not supported on here as its now got the dependancies not met, you can go to program's and check in add-on installer to see if they have the latest version here if it has install it. I've checked and not yet but keep checking back.
If its Gotham try reinstalling the add-on, go to system then add-ons then get add-ons, then scroll down to Lambda add-on repo. Click on it then go video add-ons, scroll to Genesis and click on it and uninstall. Wait then reinstall it, this might work for you. If you go to the lambda repo and there's nothing, go back and hover over lambda and press the menu on your remote, then click force refresh. Wait and then click on it, this should refresh the repo.
Good luck and hope you under stand this.
Dave