As with the first version of any book, whether produced in printed or electronic format, human errors invariably occur. While every effort was made to minimise errors, a few that have been noticed are listed below:

1. The files TETRA.HTM in directories /LARGE/ and /MEDIUM/ both say "tetrahedral" instead of "tetragonal". Sites holding Intranet site licenses should copy the corrected file to both directories /LARGE/ and /MEDIUM/.
2. The file NOTATION.HTM in directory /MISC/ contains several mistakes (e.g. "Schoeflies", "rhomohedral"). Sites holding Intranet site licenses should copy the corrected file to directory /MISC/.
3. The file TWOONM.HTM in directory /MISC/ says "fourfold" instead of "twofold" at one point in the text. Sites holding Intranet site licenses should copy the corrected file to directory /MISC/.
4. The tables and space group diagrams for space group P4₃2₁2 with the non-standard origin on the 4₃ screw axis were accidently produced using symmetry generators for P4₁2₁2 by mistake. Corrected files are given in sub-directories LARGE/ and MEDIUM/.
5. The PostScript to gif file conversion for MEDIUM/158BZ1.GIF and MEDIUM/160BZ1.GIF was poor. Improved files are given in sub-directory MEDIUM/.