If you encounter the below error while trying to launch rattle package in R Studio, that indicate that GTK+ is missing.
The program can’t start because libatk-1.0-0.dll is missing from your computer. Try reinstalling the program to fix this problem.
Error in inDL(x, as.logical(local), as.logical(now), …) :
unable to load shared object ‘C:/Users/GEEK2/Documents/R/win-library/3.3/RGtk2/libs/x64/RGtk2.dll’:
LoadLibrary failure: The specified module could not be found.
Solution : Re-Install package > install.packages(“rattle”)
If the popup asks for installing GTK+, select OK