Why will update utility not update the database?

stemid

Hi vanilla community

I am new to this software but experienced with php and mysql.

So I was going to update a 2.0.18 to 2.1.6 and ran into an error where the update utility page says Failure, The update was not successful.

No more info than that so I followed all the troubleshooting steps in the update guide but nothing helped.

I started tracing the error in the code with simple echo statements and found that the problem is most likely with a database update.

This code in particular is where everything stops. On line 589 of applications/dashboard/settings/structure.php.

$Construct->Table('Tag') ->PrimaryKey('TagID') ->Column('Name', 'varchar(255)', FALSE, 'unique') ->Column('Type', 'varchar(10)', TRUE, 'index') ->Column('InsertUserID', 'int', TRUE, 'key') ->Column('DateInserted', 'datetime') ->Column('CategoryID', 'int', -1, 'unique') ->Engine('InnoDB') ->Set($Explicit, $Drop);

With my limited experience in PHP I can trace the error to line 392 of file library/database/class.databasestructure.php where I believe Gdn_DatabaseStructure->_Modify() is being called but then I can't follow it anymore.

So why is the update utility unable to modify my database table GDN_Tag?

Edit: Here is some more info I thought might be of interest, just a dump of how my GDN_Tag table looks in the database.

CREATE TABLE 'GDN_Tag' ( 'TagID' int(11) NOT NULL AUTO_INCREMENT, 'Name' varchar(255) COLLATE utf8_unicode_ci NOT NULL, 'Type' varchar(10) COLLATE utf8_unicode_ci DEFAULT NULL, 'InsertUserID' int(11) DEFAULT NULL, 'DateInserted' datetime NOT NULL, 'CountDiscussions' int(11) NOT NULL DEFAULT '0', PRIMARY KEY ('TagID'), UNIQUE KEY 'UX_Tag' ('Name'), KEY 'IX_Tag_Type' ('Type'), KEY 'FK_Tag_InsertUserID' ('InsertUserID') ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

peregrine

http://vanillaforums.org/discussion/comment/220448/#Comment_220448

peregrine

http://vanillaforums.org/discussion/comment/220448/#Comment_220448