With both the ebux/estore and the v3 arcade, I've had this same issue.
When I try and import the product file, via adminCP, I get this error:
HTML Code:
[B]Warning: Unknown: failed to open stream: No such file or directory in /admincp/plugin.php(1232) : eval()'d code on line 5
Fatal error: Unknown: Failed opening required '/home/cofgirls/public_html/includes/functions_estore.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/cofgirls/public_html/admincp/plugin.php(1232) : eval()'d code on line 5[/B]
Any idea as to what this means and how I can fix it?