Hi, I am using gretl on Windows XP. I have found a bug in gretl regarding gretl's interaction with R: When I have installed both R and gretl, in Tools > Preferences >General > Programs > Command to launch GNU R it says "RGUI.exe" in the box. First bug: Using Tools > Start GNU R results in an error message: "File not found." Second bug: When clicking on Tools > Preferences >General > Programs > Command to launch GNU R > Browse... and adding the whole path to RGUI.exe in the box , the Tools > Start GNU R works perfectly and starts R. However, when closing gretl and restarting it, the path has disappeared and it says only "RGUI.exe" in the box again. And trying to start R again results in the first bug again. Best regards Andreas Karlsson