» Sun Jan 20, 2013 11:25 am
http://www.uesp.net/wiki/Skyrim:Marriage#Bugs is usually the best place to look for bugfixes:
"If one of your followers dies before the marriage can take place, their body will turn up at the temple, causing you to fail the wedding ceremony mini-mission. The priests will then ask you to leave, and the bride or groom will storm off, angry. You can make amends by leaving a short cool down period of a couple of hours, and then going and apologizing to Maramal and then your potential spouse. The wedding will take place the following day at the same time. To avoid failing the quest a second time, drag (or use unrelenting force to push) the corpse from out the way of the door. If you are using the PC, you can also use the console to resurrect the follower then apologize to avoid a problem.
This bug is fixed by version 1.2 of the Official Skyrim Patch."