[GAP Forum] What can I do to load the package CHEVIE in GAP4

[杨高]

I have done a lot of work with GAP3, together with CHEVIE, so many thanks to the developers.


Now I want to use GAP4 with CHEVIE. But I failed in loading this package. This is what I have done.
1. Install gap4r7p8_2015_06_09-20_27.exe to E:\GAP4\gap4r7\
2. Download the package CHEVIE and release it and put it to  E:\GAP4\gap4r7\pkg 
3. Run E:\GAP4\gap4r7\bin\gap.bat
4. try 
>LoadPackage("chevie");
or
>RequirePackage("chevie");


But both return "fail". 


Am I wrong in using the package here? Or is it impossible to use CHEVIE in GAP4? If I cannot use CHEVIE in GAP4, then is it possible to use both GAP3 and GAP4 in one program, like passing data from one to another in the runtime of a program?


Thanks very much.