Help Import Sonnb Xen Gallery To Another Sonnb Xen Gallery

Hi, im trying to import sonnb xen gallery to another sonnb xen gallery and get this error with trying to import categories.

Code:

Server Error

Mysqli statement execute error : Duplicate entry '1' for key 'PRIMARY'

    Zend_Db_Statement_Mysqli->_execute() in Zend/Db/Statement.php at line 297
    Zend_Db_Statement->execute() in Zend/Db/Adapter/Abstract.php at line 479
    Zend_Db_Adapter_Abstract->query() in Zend/Db/Adapter/Abstract.php at line 574
    Zend_Db_Adapter_Abstract->insert() in XenForo/DataWriter.php at line 1624
    XenForo_DataWriter->_insert() in XenForo/DataWriter.php at line 1613
    XenForo_DataWriter->_save() in XenForo/DataWriter.php at line 1405
    XenForo_DataWriter->save() in sonnb/XenGallery/Model/Import.php at line 108
    sonnb_XenGallery_Model_Import->importXenGallery() in sonnb/XenGallery/Model/Import.php at line 16
    sonnb_XenGallery_Model_Import->importXenGalleryCategory() in sonnb/XenGallery/Importer/XenGallery.php at line 245
    sonnb_XenGallery_Importer_XenGallery->stepCategories() in XenForo/Importer/Abstract.php at line 97
    XenForo_Importer_Abstract->runStep() in XenForo/ControllerAdmin/Import.php at line 187
    XenForo_ControllerAdmin_Import->_runStep() in XenForo/ControllerAdmin/Import.php at line 135
    XenForo_ControllerAdmin_Import->actionImport() in XenForo/FrontController.php at line 347
    XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134
    XenForo_FrontController->run() in /home/test/public_html/admin.php at line 13

im importing another xen forum and its sonnb gallery. so far i have imported users/posts etc. but stuck on the above. running the latest gallery and xenforo at this time.

thanks.

 

hi mate, the target forum has gallery data, so i did not tick retain id.
so im not sure whats going on here. thanks.

EDIT: i have decided to bail out of this project. there seems no solution and my times ran out.
thanks anyways.