Recurring Internal Error


Recently I have encountered this issue:

In Detail:

An internal error has occurred. It is recommended to restart UiPath Studio.

Error: System.InvalidOperationException: A TwoWay or OneWayToSource binding cannot work on the read-only property ‘Content’ of type ‘System.Activities.Presentation.Model.ModelItemImpl’.
at MS.Internal.Data.PropertyPathWorker.CheckReadOnly(Object item, Object info)
at MS.Internal.Data.PropertyPathWorker.ReplaceItem(Int32 k, Object newO, Object parent)
at MS.Internal.Data.PropertyPathWorker.UpdateSourceValueState(Int32 k, ICollectionView collectionView, Object newValue, Boolean isASubPropertyChange)
at MS.Internal.Data.ClrBindingWorker.AttachDataItem()
at System.Windows.Data.BindingExpression.Activate(Object item)
at System.Windows.Data.BindingExpression.AttachToContext(AttachAttempt attempt)
at System.Windows.Data.BindingExpression.MS.Internal.Data.IDataBindEngineClient.AttachToContext(Boolean lastChance)
at MS.Internal.Data.DataBindEngine.Task.Run(Boolean lastChance)
at MS.Internal.Data.DataBindEngine.Run(Object arg)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler), HResult -2146233079

I am guessing this has something to do with the dependencies but i don’t know which one, any help is much appreciated. Thanks

These are the dependencies I’m currently using:

Hi @avlavarias,

Does it work fine after restart?
I guess just restarting the Studio should resolve this error…


Hi, @poojajoshi1,

I ended up deleting some dependencies (i’m not going to use all of them, added it for experimentation), it’s working now.


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