G0064 : Operand missing and G0008 : Syntax error

qz is now a GAUSS built-in function, so you will need to use find-and-replace to change all uses of qz to something else. I would recommend qz_.

Thank you very much. I have solved the problem on "qz" issue, but I got a new error as below:

Error in xlsWriteM: Could not load file

The code on that line locates xls.src is:

errorlogat "Error in xlsWriteM: "$+retXlsErr(__convertXlsErrCode(err), file);

Could you help me fix the error?

This is likely occurring because you are trying to load a data file and GAUSS cannot locate that file in any directory it is looking in.

There are a few blogs and tutorials that may help with this issue:

1. "The Current Working Directory, What You Need to Know" will help explain how GAUSS decides what directories to search in when looking for files.
2. "SRC_PATH tutorial"
3. "Make Your Code More Portable: Data Paths" explains best practices for setting your data paths.

Hope this helps.