The following functions cause unknown variable errors:

(define (gnc:html-acct-table-prepend-row! acct-table newrow)
  (gnc:html-table-prepend-row!
   (gnc:_html-acct-table-matrix_ acct-table)
   (map
    (lambda (x) (gnc:make-html-table-cell (list x)))
    objects)))

(define (gnc:html-acct-table-prepend-col! acct-table newrow)
  (gnc:html-table-prepend-col!
   (gnc:_html-acct-table-matrix_ acct-table)
   (map
    (lambda (x) (gnc:make-html-table-cell (list x)))
    objects)))

In the lambdas, 'objects' has not been defined. For -prepend-row!, 'objects' should be changed to 'newrow'. For -prepend-col!, 'newrow' & 'objects' should be changed to 'newcol'.

For the sake of consistency, 'objects' in the -append-row & -append-col functions could also be changed to 'newrow' & 'newcol', respectively.