Mercedes WIS software

[8092400e]

Finally got the WIS software working on an older laptop. The program recognizes the VIN on our 2001 ML, but not on the 1988 560. I found a bunch of generic data but can't even locate the 560SL in the drop down menu when the first 3 VIN characters are selected.

Any help with this? It looks like a pretty powerful program.

Thanks.