Additionally, after seeing a thread on Slack by @dswitzer, who had issues within the Lucee Administrator (not being able to load certain administrator pages), I can confirm that I had a similar issue on test upgrades in Ubuntu (it might be the same on Windows): The Lucee Administrator were not fully deployed when upgrading with the full lucee-5.4.3.2.jar. If you are finding the same issues, you might need to do the following:
ATTENTION: Make a backup of your Administrator Settings first. This will wipe all settings made through your Lucee Administrator (e.g. password, mappings, etc).
UPDATED thanks to @Zackster remarks below:
Step 1: Stop Lucee
Step 2: lucee-server.xml at path-to-lucee/tomcat/lucee-server/context/lucee-server.xml
Step 2: delete “lucee-server” directory
Step 3: restart Lucee and wait Lucee to fully redeploy your “lucee-server” folder.
Step 4: copy the lucee-server.xml back to the path-to-lucee/tomcat/lucee-server/context/lucee-server.xml