I'm not able to reproduce the error you report, the error I see is different:
Parse error: syntax error, unexpected ')' in /home/dryrunco/public_html/novagen.co.za/WA_eCart/Novagen_Cart_PHP.php on line 88
this has to do with the tax rule. in the tax rule you have used the calculation:
Taxable Total Times 14%
you can't enter 14% in the calculation, you need to convert the percentage to a decimal number:
0.14
Taxable Total Times 0.14