[[!comment format=mdwn username="joey" subject="""comment 10""" date="2016-06-02T22:14:23Z" content=""" Mistakes in the parameters of properties (leaving out a parameter, wrong type parameter, etc) don't cause these super-long error messages, even when the property is in the middle of a big block of other properties. The problem occurs only when a lot of properties have been combined together using `&` and used in an ill-typed way; in this situation ghc can't infer the a simple type for the combined properties, due to the use of type level functions to combine them. So, at least in this case, it doesn't seem to be a problem users are likely to hit except during the propellor 3.0 ugrade or if they forget to use `props` at some other time. """]]