When running the indexing for url rewrite catalog, I’m getting an error 500 interal server error, but I cannot get it to generate any errors to the exceptions.log .. I’ve tried to empty the core_url_rewrites but with no luck, still getting error 500 and no log file. It’s Magento 1.6.2
The error generated when the 500 screen turns up:
http://www.domain.com/index.php/admin/process/reindexProcess/process/3/key/caac7ef08590009411a43aa71a990192/
I think you running out of memory, allocate more in your .htaccess file:
512M should do it, if not try incrementing this value even more.