Error in copy_libraries

[jroberayalas]

I'm new with slidify. I just created the simplest possible example as suggested in the GitHub repo, but for some reason I get back the following error:

Error in copy_libraries(framework, highlighter, widgets, url$lib) :
Please install slidifyLibraries

I've already installed both slidify and slidifyLibraries using:

install_github('ramnathv/slidify')
install_github('ramnathv/slidifyLibraries')

Is there any reason why this is happening?

I'm using the latest RStudio version (Version 0.99.1266) with R version 3.3.1 (2016-06-21) -- "Bug in Your Hair" in a Windows computer using Windows 7.