Fatal error: Unable to initialize a new token cache

Does anyone know what could possibly be causing this? Fatal error: Unable to initialize a new token cache in /www/htdocs/category.php3 on line 119 This line is nothing special, its just assigning some values: 118: for ($i = 4; $i < $count_subcats + 4; $i++) { 119: eval("\$amount_this += \$dummy[$i];"); 120: }; I first thought maybe I was out of memory (this is dealing with a large amount of data), but I bumped the memory from 8MB to 16MB and I still got the same problem in the same spot. It works for around 289 of these invoices I'm processing, but it fails at 293 everytime for this one. I was just wondering if anyone knew what this meant before I look for more memory efficient ways of accomplishing what I'm after (if it's even possible to get more memory efficient). Thanks! Nick Riemondi outerscape.net