Upgrading from 4.8.10 to 5.20.0

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I have encountered this problem which occurs towards the end of the upgrade wizard (Migrate java libraries). The wizard does not list any compilation errors and I cannot find any reference to anything in the text below in Eclipse. Can anyone suggest a way forward? System.NullReferenceException: Object reference not set to an instance of an object. at Mendix.Modeler.WebUI.Deployment.WebUIDeploymentWorker.GenerateFiles(IProject project, IProgressInfo info, Boolean updateRunningProject) in c:\jenkins\workspace\AppStudio-WebUI-Modeler\modeler\Mendix.Modeler.WebUI\Deployment\WebUIDeploymentWorker.cs:line 118 at Mendix.Modeler.WebUI.Deployment.WebUIDeploymentWorker.DoWork(DeploymentPhase phase, IProject project, DeploymentSettings settings, IProgressInfo info) in c:\jenkins\workspace\AppStudio-WebUI-Modeler\modeler\Mendix.Modeler.WebUI\Deployment\WebUIDeploymentWorker.cs:line 36 at Mendix.Modeler.Deployment.DeploymentProcessBuilder.<>cDisplayClass7.<addbuildstepsforphase>b6(IProgressInfo info) in c:\jenkins\workspace\AppStudio-Modeler\src\Mendix.Modeler.Core\Deployment\DeploymentProcessBuilder.cs:line 117 at Mendix.Modeler.Deployment.FileIOExceptionHandlingProcess.CatchDiskException(Action action) in c:\jenkins\workspace\AppStudio-Modeler\src\Mendix.Modeler.Core\Deployment\FileIOExceptionHandlingProcess.cs:line 28 at Mendix.Modeler.Deployment.FileIOExceptionHandlingProcess.<>cDisplayClass2.<addstep>b0(IProgressInfo info) in c:\jenkins\workspace\AppStudio-Modeler\src\Mendix.Modeler.Core\Deployment\FileIOExceptionHandlingProcess.cs:line 19 at Mendix.Modeler.Utility.Progress.ProcessRunner.RunStep(Step step) in c:\jenkins\workspace\AppStudio-Modeler\src\Mendix.Modeler.UIFramework\Progress\ProcessRunner.cs:line 85 at Mendix.Modeler.Utility.Progress.ProcessRunner.worker_DoWork(Object sender, DoWorkEventArgs e) in c:\jenkins\workspace\AppStudio-Modeler\src\Mendix.Modeler.UIFramework\Progress\ProcessRunner.cs:line 67 at System.ComponentModel.BackgroundWorker.OnDoWork(DoWorkEventArgs e) at System.ComponentModel.BackgroundWorker.WorkerThreadStart(Object argument)
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1 answers
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Did you remove all excluded items from your model? Excluded items can be a source of this conversion error.

Regards,

Ronald

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