I'm trying to upgrade our server from 5014 to 602, I issue the install.sh in the installation package, while upgrading to 5.0.16, an error occurs, and the trace stack as following:

Exception in thread "main" java.lang.NoSuchMethodError: com.zimbra.common.stats.Counter.(Ljava/lang/String; V
at com.zimbra.cs.stats.ZimbraPerf.(ZimbraPerf.java:59)
at com.zimbra.cs.account.ldap.ZimbraLdapContext.(ZimbraLdapContext.java:286)
at com.zimbra.cs.account.ldap.ZimbraLdapContext.(ZimbraLdapContext.java:275)
at com.zimbra..........

Any idea?
thx in advanced