Hi, Dave.
First, you should make sure you're running the latest betas of everything. The latest agent is 0.8.1.16 - that shouldn't be a big factor in the problems you're having, but we did fix some problems in PingPlotter Pro since the remote agent 0.8.0.51 was released, so maybe you're running an older beta of PingPlotter Pro as well?
Next, make sure the URL for the remote agent is right - particularly if you're running anything before beta 9. We fixed some issues with the way it parses the URL - particularly if you leave off the trailing / in the agent (a missing trailing / in beta 7 would cause problems similar to what you're seeing - that is no longer an issue in the latest, though).
If you're already running beta 9 and you're still having problems, send us a message initiated from the PingPlotter Pro help menu - as it sends a bunch of extra information to us, like your settings and error logs. Do this by going to Help -> Email PingPlotter Support... We can respond back on the message boards here (with any private information removed, of course).
- Pete
