MITK crashes with the following error:
`An invalid parameter was passed to a function that considers invalid parameters fatal.`
That happens when calling `name.back()` with an empty name. It is produced by `Directory::Load`.
Call stack:
- `mitk::nnUNetTool::~nnUNetTool()`
- `itksys::SystemTools::RemoveADirectory(this->GetMitkTempDir())`
- `dir.Load(source)`
To reproduce:
1. open MITK, load an image
2. open the Segmentation view
3. create a new segmentation node
4. close the Segmentation View
5. open the Segmentation View again
Alternative:
1. open MITK, load an image
2. open the Segmentation view
3. close the workbench via "x"
Happens on Windows, only in debug.