I downloaded and installed B4A 5.5 beta.
I then loaded the b4a-license.txt attachment to my desktop.
When I try to run b4a, a locate license message appears. When I specify the location and click on "Open", the following message appears:
"License file version is invalid (older version)"
There are no files on my system named "b4a-license.txt" except the one downloaded from your attachment in the version 5.5 beta email.