Error message when adding solutions

When you try to add a new solution to an idea (which already has atleast one solution) you get the following error-message:

warning: Missing argument 1 for ChoiceSolutionModel::loadFromPost(), called in C:\Program Files\PostgreSQL\EnterpriseDB ApachePhp\apache\www\modules\ideatorrent\controller.php on line 1750 and defined in C:\Program Files\PostgreSQL\EnterpriseDB ApachePhp\apache\www\modules\ideatorrent\models\choicesolution.php on line 106.

(The solution is added though.)