无法安装插件Spring Security UI

Question

将更改应用于项目结构时会产生以下错误：

 - Error | Resolve error obtaining dependencies: Could not find artifact
   org.grails.plugins:spring-security-ui:jar:1.0-RC3 in grailsCentral
   (http://repo.grails.org/grails/plugins) (Use --stacktrace to see the
   full trace) 
 - Error | Resolve error obtaining dependencies: Could not    find
   artifact org.grails.plugins:spring-security-ui:jar:1.0-RC3 in   
   grailsCentral (http://repo.grails.org/grails/plugins) (Use   
   --stacktrace to see the full trace)  
 - Error | Resolve error obtaining dependencies: Could not find artifact
   org.grails.plugins:spring-security-ui:jar:1.0-RC3 in grailsCentral   
   (http://repo.grails.org/grails/plugins) (Use --stacktrace to see the 
   full trace)                
 - Error | Could not find artifact         
   org.grails.plugins:spring-security-ui:jar:1.0-RC3 in grailsCentral   
   (http://repo.grails.org/grails/plugins)

环境：

Java 1.7
Grails 2.3.8
IntelliJ IDEA 15 as IDE

依赖添加到BuildConfig.groovy： 编译“org.grails.plugins：spring-security-ui：1.0-RC3”

提前致谢。