Installation error

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Note: both domain and TLD names are substituted with ---

Header text:
The installation has encountered an error.
Please continue to the error page

Link on text "the error page" above:
http://wiki.---.---/install.php?profile=drupal_wiki&locale=en&id=1&op=fi...

When opening/clicking the link mentioned above the installation continues.

The error text:
An AJAX HTTP error occurred. HTTP Result Code: 200 Debugging information follows. Path: http://wiki.---.---/install.php?profile=drupal_wiki&locale=en&id=1&op=do StatusText: OK ResponseText: Home | Drupal @import url("http://wiki.---.---/modules/system/system.messages.css?0"); @import url("http://wiki.---.---/modules/system/system.base.css?0"); @import url("http://wiki.---.---/modules/system/system.theme.css?0"); @import url("http://wiki.---.---/modules/system/system.menus.css?0"); @import url("http://wiki.---.---/profiles/drupal_wiki/modules/footnotes/footnotes.css?0"); @import url("http://wiki.---.---/modules/comment/comment.css?0"); @import url("http://wiki.---.---/modules/field/theme/field.css?0"); @import url("http://wiki.---.---/modules/node/node.css?0"); @import url("http://wiki.---.---/modules/search/search.css?0"); @import url("http://wiki.---.---/modules/user/user.css?0"); @import url("http://wiki.---.---/profiles/drupal_wiki/modules/extlink/extlink.css?0"); @import url("http://wiki.---.---/modules/system/system.admin.css?0"); @import url("http://wiki.---.---/modules/system/system.maintenance.css?0"); @import url("http://wiki.---.---/profiles/drupal_wiki/modules/ctools/css/ctools.css?0"); @import url("http://wiki.---.---/themes/seven/reset.css?0"); @import url("http://wiki.---.---/themes/seven/style.css?0"); Home Installation tasksChoose profile(done)Choose language(done)Verify requirements(done)Set up database(done)Install profile(active)Configure siteFinished Status message Freelinking Prepopulate provides plugins to the 3.x line of Freelinking. The Mediawiki Format Flexifilter has been saved. SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'last_comment_uid' cannot be null

EOT