Solved! Tried everything in the support documents and none of it worked. Massive frustration with Adobe Chat staff who know nothing and just kept telling me to look at the support documents over and over. They also gave me a contact number in Australia that has a recorde d message saying the product is not supported! What is that about?
Finally Anand from Adobe tech support called me (from when I reopened the original support case that gave me the serial number).
Just had to rename folder SLCache in c:\program files(x86) and reaccept the EULA and reactive. Now everything works fine. Way to hard.