Currently at 5.6.2.1 and trying to update to 5.6.3.1. Here is what I receive: An Unexpected Error occurred while upgrading: #0 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/libraries/3rdparty/adodb/adodb.inc.php(1074): adodb_throw('mysqlt', 'EXECUTE', 1142, 'INDEX command d...', 'DROP INDEX cDat...', false, Object(ADODB_mysqlt)) #1 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/libraries/3rdparty/adodb/adodb.inc.php(1049): ADOConnection->_Execute('DROP INDEX cDat...', false) #2 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/libraries/3rdparty/adodb/adodb-datadict.inc.php(378): ADOConnection->Execute('DROP INDEX cDat...') #3 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/libraries/3rdparty/adodb/adodb-xmlschema03.inc.php(1737): ADODB_DataDict->ExecuteSQLArray(Array, false) #4 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/core/models/package.php(207): adoSchema->ExecuteSchema() #5 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/core/controllers/single_pages/upgrade.php(230): Concrete5_Model_Package::installDB('/home1/matrixx/...') #6 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/core/controllers/single_pages/upgrade.php(251): Concrete5_Controller_Upgrade->refreshDatabaseTables(Array) #7 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/core/controllers/single_pages/upgrade.php(59): Concrete5_Controller_Upgrade->do_upgrade() #8 [internal function]: Concrete5_Controller_Upgrade->view('tools', 'required', 'upgrade.php') #9 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/core/libraries/controller.php(267): call_user_func_array(Array, Array) #10 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/core/libraries/controller.php(237): Concrete5_Library_Controller->runTask('view', Array) #11 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/core/libraries/view.php(774): Concrete5_Library_Controller->setupAndRun() #12 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/tools/upgrade.php(6): Concrete5_Library_View->render('/upgrade') #13 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/startup/tools_upgrade_check.php(9): include('/home1/matrixx/...') #14 /home1/matrixx/public_html/updates/concrete5.6.3.1_updater/concrete/dispatcher.php(105): require('/home1/matrixx/...') #15 /home1/matrixx/public_html/concrete/startup/updated_core_check.php(7): require('/home1/matrixx/...') #16 /home1/matrixx/public_html/concrete/dispatcher.php(25): require('/home1/matrixx/...') #17 /home1/matrixx/public_html/index.php(2): require('/home1/matrixx/...') #18 {main}

Can anyone shed light on the issue? Thank you C5 community!