This reproduces if you have dgvoodoo in place in your C:\Program Files (x86)\PlayOnline\SquareEnix\PlayOnlineViewer directory, the Fenestra launcher will hang at the "Transferring settings" phase, then become not responding and you have to force close it. However a PlayOnline process still seems to spawn that is only visible in Task Manager, it also seems to always be consuming ~10% CPU for me. Not sure if other launcher crashes would have the same result.
This reproduces if you have dgvoodoo in place in your C:\Program Files (x86)\PlayOnline\SquareEnix\PlayOnlineViewer directory, the Fenestra launcher will hang at the "Transferring settings" phase, then become not responding and you have to force close it. However a PlayOnline process still seems to spawn that is only visible in Task Manager, it also seems to always be consuming ~10% CPU for me. Not sure if other launcher crashes would have the same result.