If you have run into the below error while copying the Design Console from Linux box to windows box so that you can run it locally
exception in thread main java.lang.noclassdeffounderror: oracle/jrf/PortabilityLayerException
at com.thortech.xl.client.base.tcAppWindow.internalLogin(tcAppWindow.java:583)
then the fix for this error is to copy jrf-api.jar from server's oracle_common/modules/oracle.jrf folder to either lib or ext folder in design console
and then edit the classpath.bat to correct the path at the end to include jrf-api.jar
On server side DC works becuase jrf-api.jar points to correct location
but while copying the reference breaks.