We are trying to export BPMN model in .bpmn format, we are getting an error while saving the file to the disk.

The Error says: 

Transformation Failed

Unable to read transformation profile.
java.lang.NullPointerException
at com.aris.modeling.server.bl.logic.mtexecution.manager.ATransformationManager.getTransformation(ATransformationManager.java:114)
at com.aris.modeling.server.bl.logic.mtexecution.ATransformationController$TransformationExecutionCommand.loadTransformation(ATransformationController.java:600)
at com.aris.modeling.server.bl.logic.mtexecution.ATransformationController$TransformationExecutionCommand.invoke(ATransformationController.java:318)
at com.aris.modeling.server.bl.logic.mtexecution.ATransformationController.executeTransformationImpl(ATransformationController.java:171)
at com.aris.modeling.server.bl.logic.mtexecution.ATransformationController.executeTransformation(ATransformationController.java:128)
at com.aris.modeling.server.bl.components.mtexecution.AMTExecutionAction.run(AMTExecutionAction.java:102)
at com.aris.modeling.server.common.progress.AServerTaskRunnable.run(AServerTaskRunnable.java:29)
at java.lang.Thread.run(Thread.java:748)