ZenCart instal ok, but could not lounch

[Smart]

Dear all,
Please support me, I already installed ZenCart sucsessfully, included admin login.
But it couldn't be lounching to the online, because there is a messeges like :
Warning: require(includes/application_top.php) [function.require]: failed to open stream: No such file or directory in /home/a4178339/public_html/index.php on line 26
and
Fatal error: require() [function.require]: Failed opening required 'includes/application_top.php' (include_path='.:/usr/lib/php:/usr/local/lib/php') in /home/a4178339/public_html/index.php on line 26

So, what shall I do ?

Thanks for your support

Smarta

[bonnit]

it seems you are missing critical files, either replace those files or remove and do a fresh install

[Meshach]

Your files were most-likely corrupted during upload.