Comment 11 for bug 990946

It sounds like for whatever reason you do not have patch installed. You can install it by typing "sudo apt-get install patch" or installing patch from the software center. Then yes, save the setnextalarm.patch file. Open up a terminal in the folder where you have the patch file saved, and run the command in step 3: "sudo patch /usr/share/wakeup/setnextalarm.py setnextalarm.patch" (without the quotes).