We are an Academic site. I think I have located a bug. In some configurations of the latest operating systems, LispWorks 4.1 will not start as shipped.
Instructions are here .
The minimum specifications for running LispWorks are a 486 DX with 32 MB RAM and 20 MB of hard disk space for installing the image and libraries. A Pentium processor with 64 MB RAM is the recommended specification. A full set of documentation, both in PDF and HTML formats can optionally be installed. The Personal Edition is intended for personal and educational Lisp programming. As a contribution to the Common Lisp community, Xanalys is making the Personal Edition of LispWorks for Windows available free of charge.