changed permalinks

When I change my Permalink Structure to:

/%post_id%/%postname%/
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my sidebars don’t show up. it says:

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 72 bytes) in /home1/villagh2/public_html/wp-includes/wp-db.php on line 468
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LINE 468 is:
$query = str_replace(‘%s’, “‘%s'”, $query); // quote the strings

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any suggestions?