FL 20.
If the Master channel is set to None for its Audio Target Output and then you save the project,
the next time you try to open that project FL 20 will freeze. Nothing can be done.
I found ...
FLStudio (20.6.2.1549) has encountered an error and need to restart.
Crash log saved to C:UsersdenniDocumentsImage-LineFLStudioSupportLogsCrash folder.
Please use Ctrl+C to copy this message and report to support.
Exception ...