Unfortunately as I stated before, I no longer possess the installs for Dashboard 6.x or Dashboard 5.x nor do I have them installed on my system. I also cannot find any place to download them from the Ross Video website. I only see the most recent version. Surely you must have an area to download legacy versions? Just like Nvidia has for their drivers or AJA has for their devices.
I tried uninstalling and updating the Java on my system, but this didn't solve the problem.
I tried installing a fresh copy of Dashboard v8.0 on a new All-In-One computer running Windows 10 x64 Pro and it appeared to run fine on this system.
I decided to keep Dashboard installed on both, but copied the JRE folder from the working computer over to the other non-working ones and it actually appears to have resolved the issue. It's a good thing you mentioned that Java was possibly the cause as I hadn't considered this before. It's strange that uninstalling and reinstalling Dashboard didn't resolve this though.
In any case, I'm just pleased that it appears to be functioning now. I only wish I would have solved this a month or two ago. It would have solved some headaches.
#DashBoard