[Serusers] Serweb error

My configuration is ser 0.8.11 on Mandrake 9.1 with native php and MySQL. It works fine. I also installed serweb and made the necessary changes to its config.php. When I try to register a new user with serweb and answer to the e-mail that was sent to me I get the following message: 400 Table 'aliases' not found in memory, use save("aliases") or lookup("aliases") in the configuration script first By answering the e-mail the registration data in ser database is moved to the subscriber table but can still be found in the pending table. I tried to solve the error message by inserting "lookup("aliases")" in the beginning of the ser.cfg file and also in the uri==myself condition but then the ser doesn't start any more ("bad config file"). What should the configuration file look like? TL