Hi John,
Your problem is with WAS variables you have rename the directory but not change WAS variables for example JAVA_HOME located inside WAS_HOME
JAVA_HOME=WAS_HOME\java\bin
Rename again de directory (with space) and when you are lunching from cmd or script put directory name inside quotes (").
For example if you have WAS instaled in C:\Program Files\IBM\WebSphere\AppServer\
You can use "C:\Program Files\IBM\WebSphere\AppServer" or with command dir /W you can see the 8.3 format name f.e "PROGRA~1" so you can use to
C:\PROGRA~1\IBM\WebSphere\AppServer
Hope this helps.
P.S WAS 6.X is out of support try your installation with WAS v7, v8 or v8.5. I recommend v8.5.5
Regards