diff --git a/config/config.php b/config/config.php
index 6b8f39d7b3..aaeef0b3ff 100644
--- a/config/config.php
+++ b/config/config.php
@@ -16,7 +16,7 @@ if(!class_exists('config')){class config{}}
 if(!function_exists('getWebRoot')){function getWebRoot(){}}
 
 /* 基本设置。Basic settings. */
-$config->version       = '20.0.beta4';         // ZenTaoPHP的版本。 The version of ZenTaoPHP. Don't change it.
+$config->version       = '15.0.rc1';         // ZenTaoPHP的版本。 The version of ZenTaoPHP. Don't change it.
 $config->charset       = 'UTF-8';              // ZenTaoPHP的编码。 The encoding of ZenTaoPHP.
 $config->cookieLife    = time() + 2592000;     // Cookie的生存时间。The cookie life time.
 $config->timezone      = 'Asia/Shanghai';      // 时区设置。        The time zone setting, for more see http://www.php.net/manual/en/timezones.php.
diff --git a/db/update15.0.sql b/db/update15.0.sql
index 22d13be1e9..e889dd45af 100644
--- a/db/update15.0.sql
+++ b/db/update15.0.sql
@@ -30,7 +30,6 @@ ALTER TABLE `zt_burn` CHANGE `project` `execution` mediumint(8) unsigned NOT NUL
 ALTER TABLE `zt_doc` CHANGE `project` `execution` mediumint(8) unsigned NOT NULL;
 ALTER TABLE `zt_relation` CHANGE `project` `execution` mediumint(8) unsigned NOT NULL;
 ALTER TABLE `zt_relation` CHANGE `program` `project` mediumint(8) unsigned NOT NULL;
-ALTER TABLE `zt_case` CHANGE `project` `execution` mediumint(8) unsigned NOT NULL;
 ALTER TABLE `zt_doclib` CHANGE `project` `execution` mediumint(8) unsigned NOT NULL;
 ALTER TABLE `zt_task` CHANGE `project` `execution` mediumint(8) unsigned NOT NULL;
 ALTER TABLE `zt_testreport` CHANGE `project` `execution` mediumint(8) unsigned NOT NULL;