Importing from vBulletin 3.7.0 with XenTag 1.2.12 installed on the destination XenForo.  The source forum definitely has tags in use.
 
Looks like I'll get to copy tags manually.  

  [worse things have happened, this is manageable in this case]
 
Server Error
Mysqli prepare error: Table 'bratbase.tagcontent' doesn't exist
- Zend_Db_Statement_Mysqli->_prepare() in Zend/Db/Statement.php at line 115
 
- Zend_Db_Statement->__construct() in Zend/Db/Adapter/Mysqli.php at line 381
 
- Zend_Db_Adapter_Mysqli->prepare() in Zend/Db/Adapter/Abstract.php at line 478
 
- Zend_Db_Adapter_Abstract->query() in Zend/Db/Adapter/Abstract.php at line 734
 
- Zend_Db_Adapter_Abstract->fetchAll() in Tinhte/XenTag/XenForo/Importer/vBulletin.php at line 48
 
- Tinhte_XenTag_XenForo_Importer_vBulletin->stepTinhteXenTagTags() in XenForo/Importer/Abstract.php at line 77
 
- XenForo_Importer_Abstract->runStep() in XenForo/ControllerAdmin/Import.php at line 180
 
- XenForo_ControllerAdmin_Import->_runStep() in XenForo/ControllerAdmin/Import.php at line 232
 
- XenForo_ControllerAdmin_Import->_startStep() in XenForo/ControllerAdmin/Import.php at line 175
 
- XenForo_ControllerAdmin_Import->actionStartStep() in XenForo/FrontController.php at line 310
 
- XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 132
 
- XenForo_FrontController->run() in /hermes/waloraweb015/b101/moo.497135306/osb-xf/admin.php at line 13