exporting overridden issue

[reelhero]

Im trying to export a movie and an error message comes up that says the output file already exists. if recording continues the file will be overridden and its content will be lost. It gives me to selections 'overwrite' or keep existing file - no matter which i select the error message just refreshes. please help

[BernieCyr]

Deactivate the "Loop" mode to resolve this.
(main view screen bottom)