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Java error when opening a diagram with Data Modeler

BenDuffJan 29 2021

Hello,
We are using Data Modeler 4.1.5.907 and since the last modification of one of ours developers, we are getting java error when opening our model :
2021-01-29 16:04:43,291 [Thread-19] ERROR MDTransformer - Illegal argument for setter
java.lang.IllegalArgumentException: java.lang.ClassCastException@3101eff5
at sun.reflect.GeneratedMethodAccessor734.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at oracle.dbtools.crest.model.metadata.MDTransformer.setProperty(MDTransformer.java:67)
at oracle.dbtools.crest.model.metadata.MDTransformer.setDefaultProperty(MDTransformer.java:438)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.processProperty(XMLToObjectTransformer.java:432)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:280)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.processCollectionWithContained(XMLToObjectTransformer.java:686)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.processCollection(XMLToObjectTransformer.java:539)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:303)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:200)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:168)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:132)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:125)
at oracle.dbtools.crest.model.metadata.XMLTransformationManager.transformFromXMLToObject(XMLTransformationManager.java:2287)
at oracle.dbtools.crest.model.metadata.XMLTransformationManager.openPhysicalModelManyFiles(XMLTransformationManager.java:4464)
at oracle.dbtools.crest.model.metadata.XMLTransformationManager.openPhysicalModel(XMLTransformationManager.java:4235)
at oracle.dbtools.crest.model.metadata.XMLTransformationManager.openPhysicalModel(XMLTransformationManager.java:4220)
at oracle.dbtools.crest.model.design.Design.openDesign(Design.java:1541)
at oracle.dbtools.crest.swingui.ControllerApplication$Recent$1.run(ControllerApplication.java:4977)
2021-01-29 16:04:43,291 [Thread-19] ERROR MDTransformer - Illegal argument for setter
java.lang.IllegalArgumentException: java.lang.ClassCastException@1e5fd8e9
at sun.reflect.GeneratedMethodAccessor735.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at oracle.dbtools.crest.model.metadata.MDTransformer.setProperty(MDTransformer.java:67)
at oracle.dbtools.crest.model.metadata.MDTransformer.setDefaultProperty(MDTransformer.java:438)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.processProperty(XMLToObjectTransformer.java:432)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:280)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.processCollectionWithContained(XMLToObjectTransformer.java:686)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.processCollection(XMLToObjectTransformer.java:539)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:303)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:200)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:168)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:132)
at oracle.dbtools.crest.model.metadata.XMLToObjectTransformer.transformToObject(XMLToObjectTransformer.java:125)
at oracle.dbtools.crest.model.metadata.XMLTransformationManager.transformFromXMLToObject(XMLTransformationManager.java:2287)
at oracle.dbtools.crest.model.metadata.XMLTransformationManager.openPhysicalModelManyFiles(XMLTransformationManager.java:4464)
at oracle.dbtools.crest.model.metadata.XMLTransformationManager.openPhysicalModel(XMLTransformationManager.java:4235)
at oracle.dbtools.crest.model.metadata.XMLTransformationManager.openPhysicalModel(XMLTransformationManager.java:4220)
at oracle.dbtools.crest.model.design.Design.openDesign(Design.java:1541)
at oracle.dbtools.crest.swingui.ControllerApplication$Recent$1.run(ControllerApplication.java:4977)

.....
I guess something is wrongly done but I am not able to find it...
It is second time we get this kind of error since one week. The first time, we revert to previous version.
Thanks for your help.

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Added on Jan 29 2021
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