Sorry to say, but I dont know what's happened here, have I mistakenly ticked a wrong box or done something clumsy, whatever to my ZA Pro 6. When I open ZA, go to Privacy, Cache Cleaner tab than choose Clean Now, it starts its normal cleaning process, but half way through I get the following error: zlclient.exe - No Disk. There is no disk in the drive. Please insert a disk into drive \Device\Harddisk3\DR20. The only HDD's I've got attached to this PC is my internal C drive and a external USB, so what drive is it talking about.