无法在Eclipse Luna上安装WAS 8.5服务器工具

Question

我正在尝试在Eclipse Luna上安装WAS 8.5服务器工具但是得到以下错误，任何建议它可以是什么？

更新：我开始安装后立即显示消息：

  

“无法执行操作。计算备用解决方案，可能需要一个   while：......“

这是详细的错误消息（感谢nitind）

Cannot complete the install because one or more required items could not be found.   Software currently installed: m2e - slf4j over logback logging (Optional) 1.5.2.20150413-2215 (org.eclipse.m2e.logback.feature.feature.group 1.5.2.20150413-2215)   Missing requirement: m2e - slf4j over logback logging (Optional)
1.5.2.20150413-2215 (org.eclipse.m2e.logback.feature.feature.group 1.5.2.20150413-2215) requires 'org.eclipse.m2e.logback.configuration [1.5.2.20150413-2215]' but it could not be found