Error after installing how-did-you-hear-about-us module

Hi,

After installing how did you hear about us module and running the sql file, I received the following message. What should I do to fix this? Is this module problematic? If so, how do I turn it off without removing all the uploaded files? Please help. Thanks.

1064 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 'true', 'false'), ', now())' at line 1
in:
[INSERT INTO zen_configuration (configuration_title, configuration_key, configuration_value, configuration_description, configuration_group_id, sort_order, set_function, date_added) VALUES ('Display "Other" Referral option', 'DISPLAY_REFERRAL_OTHER', 'true', 'Display "Other - please specify" with text box in referral source in account creation', '1', '22', 'zen_cfg_select_option(array('true', 'false'), ', now());]
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