java.util.zip.ZipException: error in opening zip file
   at java.util.zip.ZipFile.open(ZipFile.java:0)
   at java.util.zip.ZipFile.<init>(ZipFile.java:214)
   at java.util.zip.ZipFile.<init>(ZipFile.java:144)
   at java.util.jar.JarFile.<init>(JarFile.java:152)
   at java.util.jar.JarFile.<init>(JarFile.java:89)
   at sun.net.www.protocol.jar.URLJarFile.<init>(URLJarFile.java:93)
   at sun.net.www.protocol.jar.URLJarFile.getJarFile(URLJarFile.java:69)
   at sun.net.www.protocol.jar.JarFileFactory.get(JarFileFactory.java:98)
   at sun.net.www.protocol.jar.JarURLConnection.connect(JarURLConnection.java:122)
   at sun.net.www.protocol.jar.JarURLConnection.getJarFile(JarURLConnection.java:89)
   at org.apache.jasper.runtime.TldScanner.scanJar(TldScanner.java:364)
   at org.apache.jasper.runtime.TldScanner.scanJars(TldScanner.java:607)
   at org.apache.jasper.runtime.TldScanner.scanTlds(TldScanner.java:282)
   at org.apache.jasper.runtime.TldScanner.getLocation(TldScanner.java:255)
   at org.netbeans.modules.web.jspparser_ext.WebAppParseSupport$InitTldLocationCacheThread.run(WebAppParseSupport.java:1072)