The thing is the error message that has been reported is applicable to PHP 5.2 being loaded: http://www.zen-cart.com/showthread.p...s)-with-v1-5-4

See post #2 the same type fix was NOT required with ZC 1.5.3... So yes upgrading the site could cause this message to now display.

Maybe I'm missing something but so far there has been no actual statement of what PHP version is currently being used/applied to the site... There is some vague reference to 5.6. Does an .htaccess file need to be used on this new site that was removed from the old files, is there one in the path for the other functional site but not this one? It would only be needed to support the host's requirement as ZC does not require an .htaccess file in the root of the store.