Can you provide the following files so we can check:
The project file and its external data folder named in the form PROJECT_FILE_files if any.
The log of ActivePresenter: You can find the log file by going to Preferences -> Miscellaneous -> View Log button.
Or you can also access the log file directly by opening Explorer, type in %AppData%\ActivePresenter then press Enter, the log file name is ActivePresenter.log in that folder.