Cannot use SAP HANA Studio with SAP HANA One Instance

Hello together,

i try to make some tests in the SAP HANA environment. But i got the following error message each time:

An internal error occurred during: "Updating system 'HDB' ...".

java.lang.NullPointerException

  at com.sap.ndb.studio.datamodel.manager.SAPSystemState.isThereAtLeastOneIndexserverProcessWithStateColor(SAPSystemState.java:44)

  at com.sap.ndb.studio.navigator.operations.SAPSystemObjectUpdate.execute(SAPSystemObjectUpdate.java:76)

  at com.sap.ndb.studio.navigator.operations.UpdateSAPSystemOperation.execute(UpdateSAPSystemOperation.java:70)

  at com.sap.ndb.studio.datamodel.controler.DataModelOperationJob.run(DataModelOperationJob.java:70)

  at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

I often read about different SAP HANA One and SAP HANA Studio versions.

Following information about the versions:

Studio: Version: 1.0.52

Hana One Instance 52.1

What could be the reason for getting this error message? I hope you can help me.

Thanks in advance.

CT