Resolution fix when it is not possible to use RE Framework project due to Microsoft Windows Design Extensibility error .
Issue Description: Projects in Studio based on the Robotic Enterprise Framework template can not be used, due to the error: Microsoft.Windows.Design.Extensibility, version 4.3.10, culture=neutral, PublicKeyToken=b03f5f7f11d50a3a or one of its dependencies.
It is not possible to create any new projects, install Studio or open already created projects.
Sample of the error:
Resolution: This error seems to be a bug in the current version of the Studio product. Until the bug is fixed, two tested workarounds are available.
Workaround #1: Search for the following file in your computer: Microsoft.Windows.Design.Extensibility.dll. On finding it (regardless of location), copy it to the folder \net461 in the Studio installation folder. (example: C:\Program Files\UiPath\Studio\net461)
Once this is performed, the change will be persistent through all the projects used in Studio.
Workaround #2: Remove the dependency UiPath.Testing.Activities 1.4.4 from the Robotic Enterprise Framework project. This is not persistent throughout all future projects, so it must be performed before opening/ running each project.