exception: Mysqli statement exexute error: Column 'text' cannot be null

Hi,
I am trying to CSV import a document with some fields and a file for each item but ends always in "Import Error". Activating Omeka log outputs following trace:

2015-09-01T14:10:55+02:00 ERR (3): [CsvImport][#27] exception 'Zend_Db_Statement_Mysqli_Exception' with message 'Mysqli statement execute error : Column 'text' cannot be null' in  omeka/application/libraries/Zend/Db/Statement/Mysqli.php:214
Stack trace:
#0  omeka/application/libraries/Zend/Db/Statement.php(303): Zend_Db_Statement_Mysqli->_execute(Array)
#1  omeka/application/libraries/Zend/Db/Adapter/Abstract.php(480): Zend_Db_Statement->execute(Array)
#2 [internal function]: Zend_Db_Adapter_Abstract->query('INSERT INTO om...', Array)
#3  omeka/application/libraries/Omeka/Db.php(79): call_user_func_array(Array, Array)
#4  omeka/application/libraries/Omeka/Db.php(252): Omeka_Db->__call('query', Array)
#5  omeka/application/libraries/Omeka/Db.php(252): Omeka_Db->query('INSERT INTO om...', Array)
#6  omeka/application/libraries/Omeka/Record/AbstractRecord.php(543): Omeka_Db->insert('ElementText', Array)
#7  omeka/application/models/Mixin/ElementText.php(671): Omeka_Record_AbstractRecord->save()
#8  omeka/application/models/Mixin/ElementText.php(93): Mixin_ElementText->saveElementTexts()
#9 [internal function]: Mixin_ElementText->afterSave(Array)
#10  omeka/application/libraries/Omeka/Record/AbstractRecord.php(251): call_user_func_array(Array, Array)
#11  omeka/application/libraries/Omeka/Record/AbstractRecord.php(280): Omeka_Record_AbstractRecord->delegateToMixins('afterSave', Array, true)
#12  omeka/application/libraries/Omeka/Record/AbstractRecord.php(550): Omeka_Record_AbstractRecord->runCallbacks('afterSave', Array)
#13  omeka/application/models/Item.php(335): Omeka_Record_AbstractRecord->save()
#14  omeka/application/models/Builder/Item.php(204): Item->saveFiles()
#15  omeka/application/libraries/globals.php(567): Builder_Item->addFiles('Url', 'http://sebinaol...', Array)
#16  omeka/plugins/CsvImport/models/CsvImport/Import.php(720): insert_files_for_item(Object(Item), 'Url', 'http://sebinaol...', Array)
#17  omeka/plugins/CsvImport/models/CsvImport/Import.php(588): CsvImport_Import->_addItemFromRow(Array)
#18  omeka/plugins/CsvImport/models/CsvImport/Import.php(336): CsvImport_Import->_importLoop(0)
#19 [internal function]: CsvImport_Import->start()
#20  omeka/plugins/CsvImport/models/CsvImport/ImportTask.php(39): call_user_func(Array)
#21  omeka/application/libraries/Omeka/Job/Process/Wrapper.php(29): CsvImport_ImportTask->perform()
#22  omeka/application/scripts/background.php(61): Omeka_Job_Process_Wrapper->run(Array)
#23 {main}

Following is also an example of CSV rows:

Monografia;ABBONDANZA, Vincenzo;Dizionario storico delle vite di tutti i monarchi ottomani fino al regnante gran signore Acmet IV, e delle più ragguardevoli cose appartenenti a quella monarchia / dato alla luce da Vincenzo Abbondanza romano a e dal medesimo dedicato all'Em. e Rev. principe il sig. cardinale D. Domenico Orsini d'Aragona;In Roma : per Luigi Vescovi e Filippo Neri;1786;"XXXII, 392 p. ; 4° (20 cm)";RARI OTT IV 060;http://sebinaol.unior.it/sebina/repository/catalogazione/documenti/Dizionario%20storico%20delle%20vite%20(127137).pdf
Monografia;ABBONDANZA, Vincenzo;Dizionario storico delle vite di tutti i monarchi ottomani fino al regnante gran signore Acmet IV, e delle più ragguardevoli cose apparenenti a quella monarchia;In Venezia : per Fr. Pitteri e Fr. Sansoni;1788;"XXVIII, 326 p. ; 8° (19 cm)";RARI OTT IV 018;http://sebinaol.unior.it/sebina/repository/catalogazione/documenti/Dizionario%20storico%20delle%20vite%20di%20tutti%20i%20monarchi%20ottomani.pdf

CSV Plugin version: 2.0.3
Omeka Version: 2.3

Any kind suggestion please?
Thanks!

Do any items get imported, or does it fail on the first one?

In my case n, no items imported at all... someone told me that he managed to import first item but no more than that.

I think the first thing you should try is upgrading to the latest version of Omeka: 2.3.1. It fixes a few problems, including one that might be involved here.