After downloading the Ann Tools package from the Asset Store I have to manually update the event type of mouseDown/mouseUp. I would have expected Unity to auto-update the code for me to make the upgrade process to 2021.1 as smooth as possible.

Steps to reproduce
- Open Unity 2021.1.0b7
- Open Asset Store. Open in Unity the following package https://assetstore.unity.com/packages/add-ons/machinelearning/ann-tools-138836
- Import the package
Notice issue >> Numerous console errors asking to update mouseUp and mouseDown event.

With Unity 2020.2.4f1, after importing the asset, the auto-updater fires asking me to back up my project. In 2021.0b7 this does not happen.

Reproducible: Windows 2021.1.0b7
Not Reproducible: Windows 2020.2.4f1

Error
Assets\ANN\Scripts\ANN\Interface\PerceptronBackPropagationInterface.cs(209,35): error CS0619: 'EventType.mouseDown' is obsolete: 'Use MouseDown instead (UnityUpgradable) -> MouseDown'

Script updater for Library\Bee\artifacts\1900b0aE.dag\Assembly-CSharp.dll failed with exitcode -532462766 and stdout: Unhandled exception. System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
---> System.IO.DirectoryNotFoundException: Could not find a part of the path 'D:\WORKSPACE\TEMP\New Unity Project\Unity[^\]+(\.ref)?\.dll$'.
at System.IO.FileStream.ValidateFileHandle(SafeFileHandle fileHandle)
at System.IO.FileStream.CreateFileOpenHandle(FileMode mode, FileShare share, FileOptions options)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options)
at System.IO.StreamReader.ValidateArgsAndOpenPath(String path, Encoding encoding, Int32 bufferSize)
at System.IO.StreamReader..ctor(String path)
at ScriptUpdater.Program.<>c__DisplayClass8_0.<Main>b__0()
at ScriptUpdater.Program.Profile[T](Func`1 toProfile, Int64& elapsedTime)
at ScriptUpdater.Program.Main(String[] args)
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)
at Program.Main(String[] args)