"Unrecoverable error" on update from 1.0 to 1.2

When running update.php to update from version 1.0 to 1.2, the following "unrecoverable error" appeared:
"An error occurred. http://www.example.com/update.php?id=99&op=do { "status": true, "percentage": 9, "message": "Remaining 20 of 22.\x3cbr/\x3eUpdating nodewords module" }
Warning: Got a packet bigger than 'max_allowed_packet' bytes query: INSERT INTO watchdog (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (1, 'php', '%message in %file on line %line.', 'a:4:{s:6:\"%error\";s:12:\"user warning\";s:8:\"%message\";s:1584586:\"Got a packet bigger than 'max_allowed_packet' bytes\nquery: UPDATE batch SET batch = 'a:8:{s:4:\\"sets\\";a:1:{i:0;a:10:{s:7:\\"sandbox\\";a:0:{}s:7:\\"results\\";a:1:{s:9:\\"nodewords\\";a:2:{i:6100;a:2:{i:0;a:2:{s:7:\\"success\\";b:1;s:5:\\"query\\";s:66:\\"ALTER TABLE {nodewords} CHANGE content `content` LONGTEXT NOT NULL\\";}i:1;a:2:{s:7:\\"success\\";b:1;s:5:\\"query\\";s:28:\\"CREATE NEW SETTING VARIABLES\\";}}i:6101;a:4220:{i:0;a: in exampledirectory/includes/database.mysql.inc on line 128
"

Now, it seems that the module does not work at all. See the attached image of the administration page.