Error when reading a scheme file in Linux:
"Error: eval: unbound variable"
In some cases when you transfer the file from PC to Unix, the file becomes unacceptable as it contains ^M as the line breaks. For example, a scheme file created on PC may not work on linux box.
Change the format of the file using a text editor.
For example, if using Notepad++ go to Format menu and click on "Convert to UNIX format".
Alternatively on some platforms you can try: