My OS = Windows 8.1 x64 pro
MP 1.7 Pre (testbuild Sebastiii)
I am using a different build from you Seb, to test something else. My picture code untouched I presume
I can reproduce the issue. Here are the screenshots and the logs.
Note: All pictures in Explorer have correct thumb and full screen image.
I show the Thumb + Full screen image of each photo.
So I think the issue is reproduced here as well.
Next post from me is the build Seb gave earlier to test if it is fixed.
FYI Seb :
Just to rule out any historical data / thumbs being present during testing, I copyd the "/_pictures_testFolder/ with its content, the three photo's and remamed the photo's a little. Then I added this new folder in configuration.exe. So from my point of view, the thumbs created and pictures shown should be 100% new compared to the first test.