License exception (CF9)

From time to time there is a license exception error in the logs though we use a paid Standard Edition 9.

Any ideas how to check WHAT license error occured and in which template? I cannot see this in the error code and I do not use any Enterprise features...

Tnx in advance.

Ronald

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500

A License exception has occurred: You tried to access a restricted feature for the Standard edition: JSP

coldfusion.license.LicenseManager$LicenseIllegalAccessException: A License exception has occurred: You tried to access a restricted feature for the Standard edition: JSP
    at coldfusion.license.LicenseManager.byte(Unknown Source)
    at coldfusion.license.LicenseManager.checkJSP(Unknown Source)
    at coldfusion.license.JspLicenseServlet.service(Unknown Source)
    at coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89)
    at jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)
    at jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)
    at jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)
    at jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)
    at jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)
    at jrunx.scheduler.ThreadPool$DownstreamMetrics.invokeRunnable(ThreadPool.java:320)
    at jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)
    at jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.java:266)
    at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)