OK, I found the reason and solution:
Reason: Pod Farm plug-ins are 32-bit, which is not supported by Reason 9.5. They must be 64-bit VSTs to work.
Solution: Get JBridge https://jstuff.wordpress.com/jbridgem/ for Mac or Windows; about $12 USD. This will successfully load 32-bit VSTs in DAWs such as Reason 9.5. All my Pod Farm 2.59 Platinum VSTs load in Reason. Works great!!!
Note: if you take a VST Snapshot in Reason you'll end up with an image of the JBridge VST interface, not the VSTs it's loading for you. So either don't take snapshots, or alternately, you can take a snapshot of JBridge, then locate the resulting PNGs, edit them and replace with a suitable sized pic of the Pod Farm VST, and you're good to go.
