System XP SP3. Graphics Nvidia GeForce Ti 4200 with AGF8, driver NV4_disp.dll with Directx 9. Until recently all was OK with Google Earth but now when launching I get message that graphics card does not support Earth in OpenGL mode, will switch you to Directx. If I select OK another message tells me to start Earth in Direct x mode. Selecting OK it just drops out of the program. Has something happened to Google Earth in the past couple of weeks, as my PC has not been altered - as far as I know. Thanks.