请问有谁遇到过Allegro中Package keepin层删不掉的情况吗？

有大神遇到过Package keepin层删不掉的情况吗？file:///一直显示Selected item not valid for current operation, ignored: Rectangle "Package Keepin/All"
No valid items selected for the current operation, exiting.
明明选中了，点击删除按钮，却说没有选中目标