Is the gagateway.lic file located in the base install of the server that is hosting the Gateway? What version were you upgrading from? If you open up a command prompt from the base installation directory and run the 'gagateway license' command do you get license information?
Yes the license is in the installation directory. Although it is named gateway.lic rather than gagateway.lic. In the user guide it says gateway.lic, so I followed that naming convention. 1.x is what the product information on the old gateway is showing.
When I run a ./gagateway license I get the message below
[root@gagtwyld01 GoAnywhere_Gateway]# ./gagateway license
Failed to refresh license: Remote host closed connection during handshake
License Type: Permanent
Valid From: 2017-04-03
Expires On: Never