[MaximeMD]

Нет.
Старая структура:
2project_fla/ProjectSettings_10.as

package 2project_fla
{
<КОД>
}

Новая:
project_fla/ProjectSettings_10.as

package project_fla
{
<КОД>
}

Кусочек кода:

package project_fla
{
    import fl.controls.*;
    import flash.display.*;
    import flash.text.*;
 
    dynamic public class ProjectSettings_10 extends MovieClip