The adapter is green when attached but turns red when in PC mode. The Mares software won't load due to "not Windows compatible". USB is connected straight to laptop. Have read Download Troubleshooting without success.........
Seem to be having a similar problem with my puck. Although the light never goes red at all, i get the same error message.
Puck is in PC mode, contacts are clean and dry. Downloaded and (re)installed the driver. Tried the libdivecomputer frontend, gives me a log but no dump:
Better late than never: Just to complete this this thread, my problem turned out to be a broken contact inside the interface.
A little solder in the right place and it was working again.