SPieterG

I also encountered this issue, in order to fix it make sure to have colmap installed: https://colmap.github.io/install.html On ubuntu I was able to install it using `sudo apt-get install colmap`

@VainF Looking at the ConcatPruner it seems to do the same with self.offsets but the test_concat.py already works even with iterative_steps = 5. Would you know what could be the...