I just installed SEOToaster eCommerce 2.5 (PHP 5.4), and of course am busy making modifications.
 
I get a parser error message while trying to save changes to the following templates:
    index
    contact
I even tried just opening the templates and saving, without any changes, and still received the same error message.
 
The toaster-form reply template saved OK.
Link to screenshot showing the error message:  
http://rstunlimited.com/parsererror.pdf
 
I haven't tried any other templates yet, but hopefully whatever fixes these two will take care of any other problems as well.
What do you think?