I just installed Appian locally. Using SQL Server and JBoss. Attache

02:32:53,412 [ServerService Thread Pool -- 114] ERROR org.hibernate.connection.DatasourceConnectionProvider - Could not find datasource: /jdbc/AppianBusinessDS

Is your appian-ds.xml correct for your Business DB? Seems to be OK for the primary

Does that matter? I was concerned about the line 340 and 469.

ERROR [stderr] (FelixStartLevel) java.lang.IllegalStateException: Cannot create ConcurrentHashMap - neither JDK 1.5 nor backport-concurrent available on the classpath

You seem to be using JDK 1.8 which is currently not supported in Appian.
forum.appian.com/.../System_Requirements.html

Thanks! I found someone else with the same issue on forum. I uninstalled and reinstalled 1.7.x and it's working great! Thank you guys for the help!