I am having a recurring problem. On startup PG just sits in my tray (normal blue icon - so it looks like it is working) but when I open the window it has the message "Error in initialization. Driver isn't installed". Often rebooting fixes this but sometimes not. Any idea how to fix it? I have uninstalled and reinstalled PG and it worked for a while and now it is doing it again. Trouble is every time I reinstall it has to start learning again. Is there any way to save what it has been taught?