27 :: 24
报错提示信息：
After Effects error: Cannot remove an item from a read-only list.
报错信息说明：
After Effects警告：不能从只读列表中移动该项目。不能清除一个未使用的来自After Effects内部项目列表之一的项目。
报错的可能原因：
请看27 :: 16
建议解决方法：
请看27 :: 16
此解决方法适用于：
5.5, 6.0, 6.5, 7.0, CS3, CS4, Mac intel, Mac PPC, PC
27::16 - Cannot insert an item into a read-only list. (2010-12-2 14:0:11)
27::2 - After Effects error: Cannot dispose a read-only list. (2010-11-29 10:49:27)
3::31 - Deleting file " " — file is busy (delete) (-47). (2010-11-12 12:22:21)
3::3 - Unable to overwrite " " – file is busy (delete) (-47). (2010-11-11 13:46:13)
3::3 - Deleting file " " ? file is busy (delete) (-47). (2010-11-11 13:43:55)