在使用Android Studio的SVN导入项目时，出现了：
svn: E180001: Unable to open an ra_local session to URL
svn: E180001: Unable to open repository 'file:///D:/PCsync/Projects/MobileSafe/trunk'
svn: E160043: Expected FS format between '1' and '5'; found format '6'.
在stackoverflow上找到了答案
http://stackoverflow.com/questions/17278061/svn-e180001-unable-to-open-an-ra-local-session-to-url
This Error said that FS format between SVN server(TortoiseSVN) and SVN client (Eclipse SVN plugin) is not equal. To fix this problem, go to repository path and change format version number.
The format file contain FS format version number:
Replace 6 with 5 .