TYPO3 Core

Try this:

Make sure that you have been through the Image processing module once, so the test images have been created.

Enter a wrong path in im_path (or imagine that you move a installation, and the path to IM changes) and go to image processing again.

Install tool will report that everything went perfectly and you will see the create test images.

https://skitch.com/sorenmalling/8m7e8/new-typo3-site-typo3-4.7-dev

The case is, that no new images are trying to be created (with the wrong im_path!) and you will just see the images from typo3temp

Try and find the image in the typo3temp folder, delete it and rerun the Image Processing, you will now get a error beacause the typo3temp doesn't exists and Image processing will try and create it, with a wrong im_path