Originally I raised this as an issue at
https://github.com/mtennekes/treemap/issues/23 but the problem seems to be related to how deployApp() installs packages. An app using the {treemap} package will deploy ok if the client system has CRAN's version of {treemap}, but not if it has GitHub's. In the snippet below, the 01_hello app has been modified just by adding the line
library(shiny)
library(shinyapps)
library(devtools)
install.packages("treemap") # ie from cran
# this works fine:
deployApp("C:/Users/Peter Ellis/Documents/R/win-library/3.1/shiny/examples/01_hello", account = "ellisp")
install_github("mtennekes/treemap/pkg") # ie from GitHub, latest built dev version
runApp("C:/Users/Peter Ellis/Documents/R/win-library/3.1/shiny/examples/01_hello") # still works locally
# but this no longer works:
deployApp("C:/Users/Peter Ellis/Documents/R/win-library/3.1/shiny/examples/01_hello", account = "ellisp")