Home page blank, admin works fine

[mc12345678]

You've taken the time to obscure all the helpful information, so we must ask: Is "/websitedirectory/" in this DIR_FS_CATALOG entry actually the complete physical path to the folder in which your ZC files are stored? It needs to be. It's not a "relative path" which assumes it's located below some other folder. It must be the complete actual folder path.

I'm assuming you've taken the same liberty with DIR_FS_SQL_CACHE and that it's the same as DIR_FS_CATALOG with '/cache/' on the end.

On the assumption that everything else you've obscured is factually correct, there doesn't appear to be anything wrong with the configure.php contents.

So, since you've said there are no myDebug-xxxxxx.log error logs being recorded in the /logs or /cache folders (per http://www.zen-cart.com/content.php?124-blank-page ) then you'll need to work with your hosting company to view the Apache error_log on your server where the server is recording the errors triggering the blank page before the Zen Cart logging infrastructure can intercept and relocate the logs to the more easily accessible /logs folder.

So, the absence of a DIR_FS_LOGS difine isn't an issue resulting in the lack of log files? Thought there was something about ZC 1.5.4 not needing it, but seemed like it could be an issue...

[mc12345678]

OK, sorry about that, I didn't realize I had introduced that term.

I do, indeed, mean the ZenCart main page (as seen by the customer).

Well, it is possible to redefine where customers first land which is part of whaat kobra was asking about...

If it is infact supposed to be yourpage/index.php then still searching for reasons...

Since you said the webaddress is used for multiple reasons/offerings, do you have a .htaccess file in the root of your store (subdirectory: /store/), and if not do you have one in the directory above that? And if not there, do you have one in a directory above that?

If the answer is yes to any of those, please post the contents and identify the location related to the store.