Adobe Animate 2019 で .as クラスを MovieClip に追加すると、以下のエラーが発生しました。
ReferenceError: Error #1069: Property loopMode not found on Symbol1 and there is no default value.
at privatePkg::___LayerProp___$/executeFrameHelper()[C:\Program Files\Adobe\Adobe Animate CC 2019\Common\Configuration\Camera\Flash\privatePkg\___LayerProp___.as:87]
at privatePkg::___LayerProp___/executeFrame()[C:\Program Files\Adobe\Adobe Animate CC 2019\Common\Configuration\Camera\Flash\privatePkg\___LayerProp___.as:68]
at Symbol1/applyLayerZdepthAndEffects()[Symbol1::frame1:17]
at Symbol1/frame1()[Symbol1::frame1:10]
at runtime::ContentPlayer/loadInitialContent()
at runtime::ContentPlayer/playRawContent()
at runtime::ContentPlayer/playContent()
at runtime::AppRunner/run()
at ADLAppEntry/run()
at global/runtime::ADLEntry()
ReferenceError: Error #1069: Property loopMode not found on Symbol1 and there is no default value.
at privatePkg::___LayerProp___$/executeFrameHelper()[C:\Program Files\Adobe\Adobe Animate CC 2019\Common\Configuration\Camera\Flash\privatePkg\___LayerProp___.as:87]
at privatePkg::___LayerProp___/executeFrame()[C:\Program Files\Adobe\Adobe Animate CC 2019\Common\Configuration\Camera\Flash\privatePkg\___LayerProp___.as:68]
at privatePkg::___LayerProp___/enterFrame()[C:\Program Files\Adobe\Adobe Animate CC 2019\Common\Configuration\Camera\Flash\privatePkg\___LayerProp___.as:63]
ReferenceError: Error #1069: Property loopMode not found on Symbol1 and there is no default value.
at privatePkg::___LayerProp___$/executeFrameHelper()[C:\Program Files\Adobe\Adobe Animate CC 2019\Common\Configuration\Camera\Flash\privatePkg\___LayerProp___.as:87]
at privatePkg::___LayerProp___/executeFrame()[C:\Program Files\Adobe\Adobe Animate CC 2019\Common\Configuration\Camera\Flash\privatePkg\___LayerProp___.as:68]
at privatePkg::___LayerProp___/enterFrame()[C:\Program Files\Adobe\Adobe Animate CC 2019\Common\Configuration\Camera\Flash\privatePkg\___LayerProp___.as:63]
同じプロジェクトが以前のバージョンの Animate または Flash でエラーなく動作します。.as ファイルには特別なものはありません。