Hi,
What i could see from the stack trace that you have given is that your presentation layer probably
jsp is trying to hit a
java class "UtilTimerStack" and this class or the binary file containing this class file (probably jar) is not in the class path
Is this class "UtilTimerStack" in any 3rd party jar or your custom written util jar or is it part of the same binary file you deployed.?
If its anything other than the same binary file then i guess it should be the class path definition of your web application that is causing this.