Some of the GRIA 5.3 service administration pages have some incorrect JSP statements in them that were accepted by earlier versions of Tomcat. In Tomcat 5.5.27 and 6.0.17 onwards the parsing of JSP has been made stricter so these pages fail. It is possible to disable the strict checking by editing the catalina.bat (Windows) or catalina.sh (Linux) file to add in this line (for Windows):

set JAVA_OPTS=-D"org.apache.jasper.compiler.Parser.STRICT_QUOTE_ESCAPING=false"

or a similar line for linux.

Please see this Tomcat issue for more information: Tomcat issue 45015.