You have too many entries in your PATH environment settings, probably from other software you installed.Note the install is from Binary packages.2015-10-31 11:55 GMT+01:00 Tao Ying <taoying86@gmail.com>:Dear all,I'm trying to install ALPS to "C:\Program Files\ALPS" on Windows x64.But there is something wrong: "Warning! PATH too long installer unable to modify PATH". How can I deal with this problem?Best regards,Tao Ying--Tao Ying,Lecturer in department of physics,Harbin Institute of Technology--Tao Ying,Lecturer in department of physics,Harbin Institute of Technology