OS: Windows 64bit
Batch rename utility fails when files with conflicting names are present in the target directory
Effect: Error dialog - "An error occurred, files can't be renamed."
To reproduce:
1. Create four files in the same directory, named as follows:
- file1.jpg
- file2.jpg
- file1.png.jpg
- file2.png.jpg
2. Attempt to use batch rename on file1.png.jpg and file2.png.jpg, replacing ".png.jpg" with ".jpg"
Actual behaviour (bug): Error dialog, no action performed
Expected behaviour: Confirmation dialog prompting overwrite of old files
