VAF - Problems with SetPropertiesOfMultipleObjects

Hi,

I have a problem with SetPropertiesOfMultipleObjects.

Summary of the code: Find objects, CheckOutMultipleObjects, GetObjectVersionAndPropertiesOfMultipleObjects, SetPropertiesOfMultipleObjects (try set one boolean value of every object), CheckInMultipleObjects

So here is the code:

[TaskProcessor(TestChangerQueID, TestChangerTaskName, TransactionMode = TransactionMode.Full, MaxRequeues = 0, MaxRetries = 0)]
[ShowOnDashboard("Test Changer", ShowRunCommand = true)]
public void TestChanger(ITaskProcessingJob<TaskDirective> job)
{
	Vault vault = job.Vault;

	MFSearchBuilder mFSearchBuilder = new MFSearchBuilder(vault)
		.Class(Configuration.Structure.Classes.Target)
		.IsCheckedOut(false)
		.Deleted(false);

	ObjectVersions results = mFSearchBuilder.Find(maxResults: 499).ObjectVersions;
	ObjVers objVers = results.GetAsObjVers();

	ObjIDs objIDs = objVers.GetAllDistinctObjIDs();
	vault.ObjectOperations.CheckOutMultipleObjects(objIDs);

	var versAndProps = vault.ObjectOperations.GetObjectVersionAndPropertiesOfMultipleObjects(objVers, LatestVersions: true, AllowCheckedOut: true, AllowMissingObjectVersions: true);
	ObjVers freshObjVers = new ObjVers();
	foreach (ObjectVersionAndProperties item in versAndProps)
	{
		freshObjVers.Add(-1, item.ObjVer);
	}

	MFPropertyValuesBuilder builder = new MFPropertyValuesBuilder(vault)
		.Add(Configuration.Structure.Properties.Target, MFDataType.MFDatatypeBoolean, Configuration.Settings.Value);

	SetPropertiesOfMultipleObjects(vault, freshObjVers, builder.Values);

	vault.ObjectOperations.CheckInMultipleObjects(freshObjVers);
}

private void SetPropertiesOfMultipleObjects(Vault vault, ObjVers objVers, PropertyValues propertyValues)
{
	SetPropertiesParamsOfMultipleObjects propertiesOfMultipleObjects = new SetPropertiesParamsOfMultipleObjects();

	foreach (ObjVer objVer in objVers)
	{
		SetPropertiesParams param = new SetPropertiesParams
		{
			ObjVer = objVer,
			PropertyValuesToSet = propertyValues,
		};

		propertiesOfMultipleObjects.Add(-1, param);
	}

	vault.ObjectPropertyOperations.SetPropertiesOfMultipleObjects(propertiesOfMultipleObjects);
}

The code always throws when the line vault.ObjectPropertyOperations.SetPropertiesOfMultipleObjects(propertiesOfMultipleObjects); is called.

The error says: "Extension method failed. VaultTransactionController.OnNewTransaction
System.Runtime.InteropServices.COMException (0x80040001): Kohde on varattu muokattavaksi M-Filesissa, mutta käyttämäsi versio ei ole muokattavaksi varattu versio kohteesta. Useimmiten tämä johtuu vanhentuneesta tiedosta asiakasohjelmistossa."

Roughly translated: "The object is checked out in M-Files but used version isn't the checked out version of the object. Most often this is due to outdated information in the client software"

I have tried this without the ObjectOperations.GetObjectVersionAndPropertiesOfMultipleObjects but no success.

Any ideas what is wrong?