So today I was getting the nice cryptic message of “other is undefined” when I was trying to call loader.require on an object.  Once I dug through my code I was trying to replicate from another section of the site, I realized that the details behind this was leaving out the loader.addModule section of code.  So if you come across this, take a look through your addModule sections to make sure you have all of the pieces you’re trying to add onto the code!