Error logging in to Tempo post 17.2 upgrade

Hello,

We tried upgrading to 17.2 from 17.1. Though we are able to successfully login into designer and admin console, we get an error whilst trying to navigate to either suite/tempo or suite/design.

The error that we see is...

JBWEB000236: Servlet.service() for servlet jsp threw exception: java.lang.IllegalArgumentException

followed by...

ERROR com.appiancorp.ap2.WrapFilter - org.apache.jasper.JasperException: org.hibernate.PropertyAccessException: Null value was assigned to a property of primitive type setter of com.appiancorp.sites.SiteTemplate.showName

JBoss Version: 6.4.15

Java Version: 1.8.0_131

We have not modified web.xml and have also tried clearing JBoss cache.

Any help or suggestion would be greatly helpful

Many Thanks....

Raghunath Kannan