2 small problems continue and account history

[cryosi]

here's the 2 problems i am having trouble with,

 

1) after checkout when you click continue to return home after buying and paying for goods the return page is 404 error page on checkout sucess)

 

2) when i email to customer saying order has changed the link it sends is a 404 error https://ssl26.servage.net/tarantulahouse.co....php?order_id=1

 

what is wrong on my site and how do i change it.

 

I have gone back though pages and pages and help on here, similar problems found but no answers found.

 

 

can anyone help?

 

Thanks