Error when I stop recording: Could not open input file

This morning I started to have this problem: when I stop recording I receive an error message "Could not open input file [path\video_filename.mp4]

In the temporary folder I can only find audio1 and audio2 mp4 files. No presence of video.

I already recorded one video this morning without any problem than I started to have this issue.

ActivePresenter version: 9.1.3 (64bit)

OS: Windows 11


well… I feel a bit stupid but after a computer reboot the problem disappeared (for now).
Anyway it is a bit strange, I use AP since years and never experienced a problem like this.