Calendar publishing agent throwing an exception when trying to access the published calendar in caching mode

When trying to access the published personal calendar in caching mode , the server throws out an exception
When trying to access the published personal calendar in online works fine
The OS platform is Linux for post office agent

Reported to the development.

Steps to duplicate:
1) Using GW 8 clinet , publish a personal calendar.
2) Login to the online mode of the client and access the published calendar.
3) You will be able to access it fine.
4) Now create a caching mailbox .
5) Go to the properties of the published calendar in caching mode . You will 
   notice that , the link for the published calendar in the caching mode is 
   different than that of in the online mode.
6) Try to access the link for the published calendar in caching mode.
7) The server will throw out an exception.

Tomcat error is:

java.lang.NumberFormatException: For input string: ""



This had been working in the beta.


Server is SLES 10SP2
Tomcat 5
Apache 2

Section from calendar publishing log file:

13:04:59, <GWCAL>, -, INFO, -, Processing request:
/gwcal/calendar/bWF0dEB3ZWlzYmVyZy5uZXQ_Y2lkPTg4NjY2Ng?merge
=tzupdate&action=noop&User.TimeZone.offset=-18000
     host: gw.ssrights.com
     user-agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.4)
Gecko/2008102920 Firefox/3.0.4
     accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
     accept-language: en-us,en;q=0.5
     accept-encoding: gzip,deflate
     accept-charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
     Keep-Alive: 300
     connection: keep-alive
     X-Requested-With: XMLHttpRequest
     referer:
https://gw.ssrights.com/gwcal/calendar/bWF0dEB3ZWlzYmVyZy5uZXQ_Y2lkPTg4NjY2Ng?Calendar.format=htm
l
     cookie: Cookie.User.settings=&SaveSettingsCheckbox=1
     Max-Forwards: 10

13:04:59, <TPLT>, -, INFO, -, Compiled template: default/tzupdate.htt. Compiled
size=231
13:04:59, <TPLT>, -, INFO, -, Adding compiled template to cache:
default/tzupdate.htt
13:04:59, <TPLT>, -, INFO, -, Template cache in use: 22049. Cache size: 0.
13:04:59, <TPLT>, -, INFO, -, Compiled template: default/gcalendar.htt.
Compiled size=50609
13:04:59, <TPLT>, -, INFO, -, Adding compiled template to cache:
default/gcalendar.htt
13:04:59, <TPLT>, -, INFO, -, Template cache in use: 72658. Cache size: 0.
13:04:59, <MERGE>, -, INFO, -, Exception encountered while generating HTML: For
input string: ""