Hey, just thought of another possibility. If your client is set up to do only OGR, it will not run if you don't have any OGR work units left in your buff-in.ogr, since it cannot do a random OGR work unit. You can tell if this is the case because the size of the buff-in.ogr file will be 8 bytes if it's empty. If that's the case, try connecting to the Internet and then starting the client, in which case it will spot the connection and download some fresh work units.