The results fail to load if the application is run in an IIS version that is localized in a language other than English.
The output from Booleans, dates and numbers are localized and breaks the JSON format.
Ex.:
Response.Write True ' outputs "Verdadeiro" (translation for "True")
Response.Write 10.5 ' outputs "10,5" (coma for decimal separator)
Response.Write Date() ' outputs "18/06/2015" (dd/mm/yyyy)
I've noticed there is a pool request from @danielmarcoto that solves this problem: #1