Update problem with financial fields

[partnerwerk]

I activated debugging according to http://corebos.org/documentation/doku.php?id=en:devel:debuging

   Turn on debuging for ADODB instanced in include/database/PearDatabase.php (at end of file)

   if(empty($adb)) {
    $adb = new PearDatabase();
    $adb->connect();
    // ADD THIS LINE
    $adb->setDebug(true);
   }

I then run the financial fields update and the following seems to be the important output:

Code:

Query: select tax4 from vtiger_inventoryproductrel where id = '4453' and productid = '1240' failed. Unknown column 'tax4' in 'field list'
1054: Unknown column 'tax4' in 'field list'

              ADOConnection._Execute(select tax4 from vtiger_inventoryproductrel where id = '4453' and productid = '1240') % line 1204, file: adodb.inc.php
           ADOConnection.Execute(select tax4 from vtiger_inventoryproductrel where id = '4453' and productid = '1240', Array[1]) % line  495, file: PearDatabase.php
        PearDatabase.pquery(select tax4 from vtiger_inventoryproductrel where id = ? and productid = ?, Array[2]) % line  682, file: InventoryUtils.php
     getInventoryProductTaxValue(4453, 1240, tax4) % line  164, file: setVAT.php
  setVAT(Object:VTWorkflowEntity) % line  223, file: addFinancialFields.php

I hope you can tell me what to do with it...