Hello, I was having this issue http://stackoverflow.com/questions/3879794/spring-3-petclinic-owner-new-invalid-expression-in-tomcat-7/7640435#7640435
So I decided to try a couple of quick fixes and I solved it replacing the jasper-el.jar. I have blogged about the issue in http://thinkinginsoftware.blogspot.com/2011/10/tomcat-7-jstl-failed-to-parse.html Not sure if this is the list to post this issue. Hopefully it will help others. Best, -Nestor
