Which version of VirtualVP are you using? I released a new version a few days ago to try to address issues with WeatherLink 5.9.0. I don’t think the problem is because you have the Vantage Vue. I think the problem is between the WeatherLink software and VirtualVP. In examining the interaction between the new version of WeatherLink and VirtualVP, it appears there are at least two changes in WeatherLink that have resulted in problems. First, WeatherLink now sends the NVER command when it is setting up to go into bulletin mode. It didn’t used to do that. That command is only supported by data loggers with firmware after a certain date. VirtualVP did not support that command. In the new version of VirtualVP I have added support for it.
The other thing that appears to have changed in WeatherLink is that they seem to have placed very much tighter timeouts when certain commands are sent to the console. The timeouts are so short that VirtualVP may not have time to wait for the current command it’s sent to the console to finish, send the new command, and return it to the calling program before the new WeatherLink times out and sends the command again. That is what I think is causing the “did not get an Ack” error. WeatherLink is sending a command that gets a response in two parts. First it gets an ACK, then it gets a data packet. VirtualVP sends the ACK, and then spends a fraction of a second getting the packet from the console to send that too. But WeatherLink quickly (too quickly) times out, and resends the command about the same time VirtualVP is sending the packet. So WeatherLink then gets the packet, but because it was expecting the ACK now, it isn’t happy. I’ve made some changes to help in this situation too.
Apparently some people that just have weatherLink connected directly to their console are also having some communication issues (I think for the same reason of overly tight timeouts), and Davis has a beta of WeatherLink 5.9.1 available if you have the direct link http://toolbox.davisnet.com/downloads/Weather/software/Weatherlink_5.9.1%20Upgrade_Beta/
I made these changes, and it fixed the problems for me. But after sending it out to some people, a person reported they are still having problems. I’m not sure why it’s working now for me but not someone else.
Steve