I'm having an awful time trying to install zen lightbox 1.6.1 on Zen Cart version 1.3.8a.

I keep receiving the following error message:

1146 Table 'campbena_zen.configuration_group' doesn't exist
in:
[SELECT @cgi := configuration_group_id FROM configuration_group WHERE configuration_group_title = 'Zen Lightbox';]
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I know this table exists. Is this issue due to the fact that the MySQL library version 4.1.22 differs from the MySQL server version 5.0.90??