今天evernote提示更新新版本，下载升级中提示安装失败，错误码2732，然后又弹窗提示：
Also received Setup error (.\Bootstrapper.cpp:896) 0x653:Fatal error during installation.
然后在google上一搜发现最近两天出现这个问题的人特别多，都集中在windows7 64位的环境下的evernote新版本升级，然后帖子中有evernote官方的人回答解决方案，是因为在升级过程的卸载环节出现故障所致。
解决方法的帖子在：http://discussion.evernote.com/topic/36292-instalation-problem-upgrade-465/
Yes, this seems to happen on some subset of Windows 64bit users. I suggest users go contact customer support. If you feel comfortable doing it on your own, here's what seems to work for the instances I have encountered.
1. Backup your files and data.
2. Download something like REVO
3. Have local notes? Make another backup!
4. No really, make backup
5. Do a full uninstall with REVO or another tool of your choice
6. Go download 4.6.4 from evernote.com
If you have any questions that the fine folks on this forum can't answer, customer should be able to help.
解决方法就是必须先彻底删除老版本的evernote。用windows的卸载方式固然是不行的，必须用辅助的强力卸载工具才行，官方是推荐使用REVO软件。卸载干净老版本的evernote后就可以再下载新版本进行全新安装了，但是注意如果有本地的笔记，那必须先自行备份，要不然卸载工具一并也会给干掉