Dan Daley, Lynn...

Thanks for your reply reference a failure internally of the VL serial chip that required factory repair. I suspect that may be the problem, but still need to rule out a hardware problem in my USB converter. Next, I'll dig up an old Win XP PC box that has a real serial port and try SeeYou connection wizard.

One interesting note... I can hear syncrhonized clicking noises with the usb converter lights coming from the VL logger while the SeeYou connectional wizard software is querrying the VL data logger. Something in the VL makes a little noise during a serial transfer.

Noticed that this discussion migrated to evaluating USB serial converters. I've found that the ones with the FTDI chip set works real well including keeping their device drivers updated.

Walt Rogers WX