Same problem here, i have the latest zen cart and trying to install the latest zen light box and i get the following error:

1146 Table 'electro_zc2.configuration_group' doesn't exist
in:
[SELECT @cgi := configuration_group_id FROM configuration_group WHERE configuration_group_title = 'Zen Lightbox';]
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Is there anybody who has fixed this provide a step by step method to fix this? Thanks.