Solved
Installed AEM version 6.5 with SP18, Workbench won't run.
I installed AEM server 6.5 with SP18 and Workbench 6.5. Workbench says, "This version of Workbench is incompatible with AEM - Forms Server. Any ideas?

I installed AEM server 6.5 with SP18 and Workbench 6.5. Workbench says, "This version of Workbench is incompatible with AEM - Forms Server. Any ideas?

Thanks for the suggestions. I ended up uninstalling and reinstalling using the Express Mode and all was good. So very strange.
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