Errors in the firewall settings

[fb-jp]

Please tell me how to resolve the error.
I had been the setting of the firewall. Then, an error is displayed, can no longer operation of the setting.

Server Information
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Plesk Panel Version:9.2.3
OS:Linux 2.6.18-53.el5
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Operation history
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Home>Modules>Firewall>Edit firewall configuration
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Error(Display in Plesk)
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ERROR: PleskFatalException.
Rule type '' is not supported

0: common_func.php3:108
　　psaerror(string 'Rule type '' is not supported')
1: RuleList.php:75
　　RuleList->fetchRuleList()
2: class.cList.php3:99
　　cList->fetchList()
3: class.cList.php3:118
　　cList->init()
4: modules.firewall.edit.php:28
　　plesk__modules__firewall__edit->accessItem(string 'GET', NULL null)
5: UIPointer.php:596
　　UIPointer->access(string 'GET')
6: plesk.php:38
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Error Log(/var/log/sw-cp-server/error_log)
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2015-08-19 12:04:25: (mod_fastcgi.c.2582) FastCGI-stderr: PHP Notice: unserialize() [<a href='function.unserialize'>function.unserialize</a>]: Error at offset 65530 of 65535 bytes in /usr/local/psa/admin/plib/modules/firewall/FwConfigurator.php on line 131
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please help me.