I have the same problem with 10.0.1
running OS 9.2.2 on a G3.
Lots of free HD space.
Carbon lib 1.6
Folder "VectorWorks" (without the quotes) was nested in a folder "Applications (Mac OS9)".
Install did not work.
Moved VectorWorks folder out of Apps folder.. Put on top level of HD.
Still doesn't work.
Deleted Vectorwork Installer logs
Deleted Vectorwork preferences.....then had to reenter (name, co, ser no.) when trying again.
Still doesn't work.
Installer does not provide option to select application location.