@graeme-a-stewart - I don't reproduce the errors you get with biber so I haven't fixed them..
[0] Config.pm:354> INFO - This is Biber 2.7
[0] Config.pm:357> INFO - Logfile is 'cwp-csbs.blg'
[70] biber-darwin:303> INFO - === Sat Nov 10, 2018, 13:49:13
[106] Biber.pm:359> INFO - Reading 'cwp-csbs.bcf'
[233] Biber.pm:835> INFO - Found 165 citekeys in bib section 0
[249] Biber.pm:3670> INFO - Processing section 0
[272] Biber.pm:3840> INFO - Looking for bibtex format file 'cwp.bib' for section 0
[298] bibtex.pm:1435> INFO - Decoding LaTeX character macros into UTF-8
[346] bibtex.pm:1292> INFO - Found BibTeX data source 'cwp.bib'
[658] Biber.pm:3840> INFO - Looking for bibtex format file 'cwp-chapters.bib' for section 0
[661] bibtex.pm:1435> INFO - Decoding LaTeX character macros into UTF-8
[665] bibtex.pm:1292> INFO - Found BibTeX data source 'cwp-chapters.bib'
[855] UCollate.pm:68> INFO - Overriding locale 'en-US' defaults 'normalization = NFD' with 'normalization = prenormalized'
[855] UCollate.pm:68> INFO - Overriding locale 'en-US' defaults 'variable = shifted' with 'variable = non-ignorable'
[855] Biber.pm:3499> INFO - Sorting list 'nty/global/' of type 'entry' with scheme 'nty' and locale 'en-US'
[855] Biber.pm:3505> INFO - No sort tailoring available for locale 'en-US'
[1041] bbl.pm:608> INFO - Writing 'cwp-csbs.bbl' with encoding 'UTF-8'
[1066] bbl.pm:712> INFO - Output to cwp-csbs.bbl
@graeme-a-stewart - I don't reproduce the errors you get with biber so I haven't fixed them..
[0] Config.pm:354> INFO - This is Biber 2.7 [0] Config.pm:357> INFO - Logfile is 'cwp-csbs.blg' [70] biber-darwin:303> INFO - === Sat Nov 10, 2018, 13:49:13 [106] Biber.pm:359> INFO - Reading 'cwp-csbs.bcf' [233] Biber.pm:835> INFO - Found 165 citekeys in bib section 0 [249] Biber.pm:3670> INFO - Processing section 0 [272] Biber.pm:3840> INFO - Looking for bibtex format file 'cwp.bib' for section 0 [298] bibtex.pm:1435> INFO - Decoding LaTeX character macros into UTF-8 [346] bibtex.pm:1292> INFO - Found BibTeX data source 'cwp.bib' [658] Biber.pm:3840> INFO - Looking for bibtex format file 'cwp-chapters.bib' for section 0 [661] bibtex.pm:1435> INFO - Decoding LaTeX character macros into UTF-8 [665] bibtex.pm:1292> INFO - Found BibTeX data source 'cwp-chapters.bib' [855] UCollate.pm:68> INFO - Overriding locale 'en-US' defaults 'normalization = NFD' with 'normalization = prenormalized' [855] UCollate.pm:68> INFO - Overriding locale 'en-US' defaults 'variable = shifted' with 'variable = non-ignorable' [855] Biber.pm:3499> INFO - Sorting list 'nty/global/' of type 'entry' with scheme 'nty' and locale 'en-US' [855] Biber.pm:3505> INFO - No sort tailoring available for locale 'en-US' [1041] bbl.pm:608> INFO - Writing 'cwp-csbs.bbl' with encoding 'UTF-8' [1066] bbl.pm:712> INFO - Output to cwp-csbs.bbl