I just tried this extension under Magento 1.8.1.0 under MAMP locally, but get an error message when I run the import. After clicking the check requirements button I can enter all the general information, locale selection and import options, but when clicking the start running button it shows a JavaScript popup just saying "error".
The webserver error log has the following ERR messages:
2013-12-17T21:37:04+00:00 ERR (3): User Error: DDL statements are not allowed in transactions in /Applications/MAMP/htdocs/magento/1.8/lib/Varien/Db/Adapter/Pdo/Mysql.php on line 408
2013-12-17T21:37:04+00:00 ERR (3): User Error: Some transactions have not been committed or rolled back in /Applications/MAMP/htdocs/magento/1.8/lib/Varien/Db/Adapter/Pdo/Mysql.php on line 3941

It worked fine though under 1.7.2.0 on the same MAMP installation for importing categories and products. When trying to import customers and orders the same problems occur as under 1.8.1.0. Same ERR messages and the following in the exception log:
2013-12-17T22:49:15+00:00 ERR (3):
exception 'Exception' with message '$_FILES array is empty' in /Applications/MAMP/htdocs/magento/1.7/lib/Varien/File/Uploader.php:467
Stack trace:
#0 /Applications/MAMP/htdocs/magento/1.7/lib/Varien/File/Uploader.php(149): Varien_File_Uploader->_setUploadFileId('thumbnail')
#1 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Catalog/Model/Category/Attribute/Backend/Image.php(57): Varien_File_Uploader->__construct('thumbnail')
#2 [internal function]: Mage_Catalog_Model_Category_Attribute_Backend_Image->afterSave(Object(Mage_Catalog_Model_Category))
#3 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Eav/Model/Entity/Abstract.php(657): call_user_func_array(Array, Array)
#4 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Eav/Model/Entity/Abstract.php(1648): Mage_Eav_Model_Entity_Abstract->walkAttributes('backend/afterSa...', Array)
#5 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Catalog/Model/Resource/Category.php(235): Mage_Eav_Model_Entity_Abstract->_afterSave(Object(Mage_Catalog_Model_Category))
#6 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Eav/Model/Entity/Abstract.php(1124): Mage_Catalog_Model_Resource_Category->_afterSave(Object(Mage_Catalog_Model_Category))
#7 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Core/Model/Abstract.php(318): Mage_Eav_Model_Entity_Abstract->save(Object(Mage_Catalog_Model_Category))
#8 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Oscommerce/Model/Mysql4/Oscommerce.php(264): Mage_Core_Model_Abstract->save()
#9 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Oscommerce/Model/Mysql4/Oscommerce.php(201): Mage_Oscommerce_Model_Mysql4_Oscommerce->createRootCategory()
#10 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Oscommerce/controllers/Adminhtml/Oscommerce/ImportController.php(292): Mage_Oscommerce_Model_Mysql4_Oscommerce->createWebsite('1')
#11 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Core/Controller/Varien/Action.php(419): Mage_Oscommerce_Adminhtml_Oscommerce_ImportController->runAction()
#12 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('run')
#13 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Core/Controller/Varien/Front.php(176): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#14 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#15 /Applications/MAMP/htdocs/magento/1.7/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#16 /Applications/MAMP/htdocs/magento/1.7/index.php(87): Mage::run('', 'store')
I just tried this extension under Magento 1.8.1.0 under MAMP locally, but get an error message when I run the import. After clicking the check requirements button I can enter all the general information, locale selection and import options, but when clicking the start running button it shows a JavaScript popup just saying "error".
The webserver error log has the following ERR messages:
2013-12-17T21:37:04+00:00 ERR (3): User Error: DDL statements are not allowed in transactions in /Applications/MAMP/htdocs/magento/1.8/lib/Varien/Db/Adapter/Pdo/Mysql.php on line 408

2013-12-17T21:37:04+00:00 ERR (3): User Error: Some transactions have not been committed or rolled back in /Applications/MAMP/htdocs/magento/1.8/lib/Varien/Db/Adapter/Pdo/Mysql.php on line 3941
It worked fine though under 1.7.2.0 on the same MAMP installation for importing categories and products. When trying to import customers and orders the same problems occur as under 1.8.1.0. Same ERR messages and the following in the exception log:
2013-12-17T22:49:15+00:00 ERR (3):
exception 'Exception' with message '$_FILES array is empty' in /Applications/MAMP/htdocs/magento/1.7/lib/Varien/File/Uploader.php:467
Stack trace:
#0 /Applications/MAMP/htdocs/magento/1.7/lib/Varien/File/Uploader.php(149): Varien_File_Uploader->_setUploadFileId('thumbnail')
#1 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Catalog/Model/Category/Attribute/Backend/Image.php(57): Varien_File_Uploader->__construct('thumbnail')
#2 [internal function]: Mage_Catalog_Model_Category_Attribute_Backend_Image->afterSave(Object(Mage_Catalog_Model_Category))
#3 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Eav/Model/Entity/Abstract.php(657): call_user_func_array(Array, Array)
#4 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Eav/Model/Entity/Abstract.php(1648): Mage_Eav_Model_Entity_Abstract->walkAttributes('backend/afterSa...', Array)
#5 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Catalog/Model/Resource/Category.php(235): Mage_Eav_Model_Entity_Abstract->_afterSave(Object(Mage_Catalog_Model_Category))
#6 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Eav/Model/Entity/Abstract.php(1124): Mage_Catalog_Model_Resource_Category->_afterSave(Object(Mage_Catalog_Model_Category))
#7 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Core/Model/Abstract.php(318): Mage_Eav_Model_Entity_Abstract->save(Object(Mage_Catalog_Model_Category))
#8 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Oscommerce/Model/Mysql4/Oscommerce.php(264): Mage_Core_Model_Abstract->save()
#9 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Oscommerce/Model/Mysql4/Oscommerce.php(201): Mage_Oscommerce_Model_Mysql4_Oscommerce->createRootCategory()
#10 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Oscommerce/controllers/Adminhtml/Oscommerce/ImportController.php(292): Mage_Oscommerce_Model_Mysql4_Oscommerce->createWebsite('1')
#11 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Core/Controller/Varien/Action.php(419): Mage_Oscommerce_Adminhtml_Oscommerce_ImportController->runAction()
#12 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('run')
#13 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Core/Controller/Varien/Front.php(176): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#14 /Applications/MAMP/htdocs/magento/1.7/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#15 /Applications/MAMP/htdocs/magento/1.7/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#16 /Applications/MAMP/htdocs/magento/1.7/index.php(87): Mage::run('', 'store')