Get one page checkout working on oscommerce

I have oscommerce with the following mods installed

1) Multi Store

2) STS Templates

3) Ultimate SEO

4) Order Editor

5) Manual Order Maker

6) KTG coupon

Everything works fine until i turn OPC on. If KTG Coupon is uninstalled then i get a blank page. If it is installed then i get Fatal error: Call to undefined method stdClass::calculate_discount() in ....../catalog/includes/classes/[url removed, login to view] on line 190

The old OPC works fine but does not allow discounts. I need to get this fixed quickly and fully working with all the modules installed so i can get on with the design of my site

Habilidades: OSCommerce, PHP

Veja mais: page checkout oscommerce, oscommerce page checkout, call undefined method oscommerce, ultimate page maker, php page maker, no working, my working, get $5, everything $5 store, does c have classes, c line templates, blank coupon templates, $5 everything store, oscommerce page checkout sts, one page checkout, one line php, line editor, fatal, error page design, coupon site seo, call method, php discounts, catalog maker, oscommerce php blank, page blank oscommerce

Acerca do Empregador:
( 9 comentários ) Paignton, United Kingdom

ID do Projeto: #571077

Concedido a:


Hi, we can help you. Best Regards,

$30 USD em 1 dia
(558 Comentários)

check pm, please

$120 USD em 2 dias
(317 Comentários)

6 freelancers are bidding on average $81 for this job


Let's do it

$30 USD in 2 dias
(79 Comentários)

Hi sir, we are a web design, web development expert company. We are offering an efficient, professional, friendly service. Can you check PMB for our skills and discuss with us about your project? Thanks iTcslive. :)

$80 USD in 3 dias
(108 Comentários)

Hi , We are interested , Please check PMB...

$100 USD in 2 dias
(53 Comentários)

dear sir I have gone through your bid and we can fix these issues very [url removed, login to view] have done various project son oscommerce recent projects we have finished are [url removed, login to view] [url removed, login to view] we have gone to you Mais

$123 USD in 3 dias
(0 Comentários)