i am having the same problem after install, no front page or admin page. I have been trying to follow your posts, I am not a tech person so I am not able to write scripts at all.
I did however ad the phpinfo.php file you mentioned and it made the pages show up with error messages.
At this point though I am not sure what is next.
Here is the error messages I am getting " The necessary zend_extension line could not be found in the configuration".
Then there is this which doesn't seem to be an error but might be an issue.
Please also note the following:
The file /homepages/16/d479755148/htdocs/zen/php.ini is not being recognised by PHP. Please check that the name and location of the file are correct. It may be necessary to copy the /homepages/16/d479755148/htdocs/zen/php.ini file to /homepages/16/d479755148/htdocs/zen/cube/ioncube and to all directories in which you have encoded files
I am installing cubecart in a directory on the server so it is not in the root directory, I do not know if that matters. I called my domain people and they told me to change permission on a file to 644 which would make cube cart visible, but it doesn't appear to have done anything.
Please if someone can help?
Thank you,
Steven