I am running zen cart v1.5, I upgraded via FTP and the zc_install from a fresh 1.3.9h install about one month ago. The only mod is the andover modern template. I am on a linux VPS and about two days ago, I noticed several debug log files containing the same error. From the front end of my site, I do not get any errors and have not seen any issue.

[05-Apr-2012 22:30:26 UTC] PHP Fatal error: Out of memory (allocated 6553600) (tried to allocate 491520 bytes) in /home/AAAAA/public_html/includes/modules/attributes.php on line 289

I have compared that line referenced with a clean 1.5 and it is identical. No recent changes to the site.

My host has increased the memory level this morning, but this evening I have more of these log files. I have googled the error but have come up empty on the cause or the solution.

Thanks for any ideas.
donnyb