I had been knocking my head into a wall a few days, unable to diagnose because of an unrelated server issue that wiped out my 16 environment (Rackspace is NOT what they used to be). As it looks to me, I get EXACTLY the same issue shown above with version 16. I have been trying to compile the plugin on version 15 and it's not buying it. I am on Server 2012 R2, and also tried on windows 2016 DataCenter (See Screen Shot).
Windows Server 2012 R2 really does not like these latest versions. The script engine completely crashes on loading the plug in after about 5 minutes. I am guessing some QA person loaded it, saw all was well and did not realize it would die in a few minutes.
I would not get worried, they have quite a few products and typically they keep them bullet-proof. The only catch to them is the Java dependency can be troublesome. However, as I understand, they have removed this requirement and perhaps somehow bundled it in.