error in SQL code?

I got this error upon install of this module:
user warning: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '` FOREIGN KEY (`uid`) REFERENCES users (`uid`) ON DELETE CASCADE, ADD CO' at line 2 query: ALTER TABLE dex_card ADD CONSTRAINT dex_card_ibfk_2` FOREIGN KEY (`uid`) REFERENCES users (`uid`) ON DELETE CASCADE, ADD CONSTRAINT dex_card_ibfk_1` FOREIGN KEY (`nid`) REFERENCES node (`nid`) ON DELETE CASCADE; in <...>/includes/database.mysql.inc on line 172.

I am not if this an incompatibility with my setup of not: (shared hosting):
Drupal
Version 5.7

Web server
Type Apache
Version 1.3.34
Operating system Linux
PHP interface cgi

PHP
Version 5.2.5
Database
Type MySQL
Version 5.0.51a

THanks,