You can install LispWorks 6.0 in the same directory as previous versions of LispWorks such as LispWorks 5.1. This is because all the 6.0 files are stored in a subdirectory called
You must recompile all your code with the LispWorks 6.0 compiler.
Binaries produced by
in previous versions of LispWorks such as LispWorks 5.1 do not load into a LispWorks 6.0 image.