系统升级到15.04之后 就一直没办法插入添加的源的软件

[sura]

代码： 全选

命中 http://mirrors.aliyun.com vivid-proposed/main amd64 Packages              
命中 http://mirrors.aliyun.com vivid-proposed/multiverse amd64 Packages
命中 http://mirrors.aliyun.com vivid-proposed/universe amd64 Packages
命中 http://mirrors.aliyun.com vivid-proposed/restricted i386 Packages
获取：6 http://security.ubuntu.com vivid-security/universe amd64 Packages [34.5 kB]
命中 http://mirrors.aliyun.com vivid-proposed/main i386 Packages               
命中 http://mirrors.aliyun.com vivid-proposed/multiverse i386 Packages         
命中 http://mirrors.aliyun.com vivid-proposed/universe i386 Packages         
命中 http://mirrors.aliyun.com vivid-proposed/main Translation-zh_CN         
命中 http://mirrors.aliyun.com vivid-proposed/main Translation-en            
命中 http://mirrors.aliyun.com vivid-proposed/multiverse Translation-zh_CN     
命中 http://mirrors.aliyun.com vivid-proposed/multiverse Translation-en        
命中 http://mirrors.aliyun.com vivid-proposed/restricted Translation-zh_CN
命中 http://mirrors.aliyun.com vivid-proposed/restricted Translation-en
获取：7 http://security.ubuntu.com vivid-security/restricted i386 Packages [28 B]
命中 http://mirrors.aliyun.com vivid-proposed/universe Translation-zh_CN       
命中 http://mirrors.aliyun.com vivid-proposed/universe Translation-en          
获取：8 http://security.ubuntu.com vivid-security/main i386 Packages [66.5 kB] 
获取：9 http://security.ubuntu.com vivid-security/multiverse i386 Packages [3,679 B]
获取：10 http://security.ubuntu.com vivid-security/universe i386 Packages [34.6 kB]
命中 http://security.ubuntu.com vivid-security/main Translation-en             
命中 http://security.ubuntu.com vivid-security/multiverse Translation-en       
命中 http://security.ubuntu.com vivid-security/restricted Translation-en       
命中 http://security.ubuntu.com vivid-security/universe Translation-en         
错误 http://ppa.launchpad.net vivid/main amd64 Packages                        
  404  Not Found
错误 http://ppa.launchpad.net vivid/main i386 Packages                         
  404  Not Found
忽略 http://ppa.launchpad.net vivid/main Translation-zh_CN                     
忽略 http://ppa.launchpad.net vivid/main Translation-zh                        
忽略 http://ppa.launchpad.net vivid/main Translation-en                        
下载 274 kB，耗时 10秒 (26.0 kB/s)                                             
W: 无法下载 http://ppa.launchpad.net/captiva/ppa/ubuntu/dists/vivid/main/binary-amd64/Packages  404  Not Found

W: 无法下载 http://ppa.launchpad.net/captiva/ppa/ubuntu/dists/vivid/main/binary-i386/Packages  404  Not Found

E: 部分索引文件下载失败。如果忽略它们，那将转而使用旧的索引文件。

如上部分是执行sudo apt-get update && sudo apt-get install captiva-icon-theme
的时候错误，只要我自己通过命令行添加源在安装软件，就是这个错误 。
我都吧source.list文件清空重新弄了，还是比行

[qy117121]

这个ppa源没有提供15.04的版本，禁用掉吧
http://ppa.launchpad.net/captiva/ppa/ubuntu/dists/