php5srvlet Issue with PHP on Tomcat 5

[JTechMan]

All steps to integrate PHP into Tomcat 5 seem to be correct but I keep getting the following error, think I may be jarring the files incorrectly but any insight appreciated!!

Additional JARs have been added : 'php5srvlt.jar'
Apr 1, 2010 1:28:35 PM org.apache.catalina.core.StandardContext reload
INFO: Reloading this Context has started
Apr 1, 2010 1:28:35 PM org.apache.catalina.startup.TldConfig tldScanJar
SEVERE: Exception processing JAR at resource path C:\Program Files\Apache Software Foundation\Tomcat 5.5\common\lib\php5srvlt.jar in context 
java.util.zip.ZipException: error in opening zip file
	at java.util.zip.ZipFile.open(Native Method)
	at java.util.zip.ZipFile.<init>(Unknown Source)
	at java.util.jar.JarFile.<init>(Unknown Source)
	at java.util.jar.JarFile.<init>(Unknown Source)
	at org.apache.catalina.startup.TldConfig.tldScanJar(TldConfig.java:457)
	at org.apache.catalina.startup.TldConfig.execute(TldConfig.java:307)
	at org.apache.catalina.core.StandardContext.processTlds(StandardContext.java:4302)
	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4139)
	at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3024)
	at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:432)
	at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1277)
	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1569)
	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578)
	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1578)
	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1558)