--- running R CMD build for slidify (project slidify)
* checking for file 'slidify/DESCRIPTION' ... OK
* preparing 'slidify':
* checking DESCRIPTION meta-information ... OK
* checking for LF line-endings in source and make files and shell scripts
* checking for empty or unneeded directories
WARNING: directory 'slidify/inst/skeleton/assets/img' is empty
WARNING: directory 'slidify/inst/skeleton/assets/js' is empty
WARNING: directory 'slidify/inst/skeleton/assets/layouts' is empty
* building 'slidify_0.5.tar.gz'

(slidify 0.3.3)
* installing to library 'z:/rforge/Rlib/win7-3.0'
ERROR: dependency 'yaml' is not available for package 'slidify'
* removing 'z:/rforge/Rlib/win7-3.0/slidify'