checkout problem in the simple demo

[simplesoft <simplesoft@simplesoft.com>]

Hi

Can you help me?
J have install minivend 3.12, but when [Place order!] in the simple demo j
get the error below:
------------------
we' sorry, but your order could not be processed at this time  due to
technical problems. Pleas print the order page and give us a call. We will
follow up as soon as possible.
-------------------

Any suggestion? 

J'm sure that the sendmail path is correct!! 

 
Thanks in advance.
filippo
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