Alert class import causes errors

Question

Hello,
I am the local new guy. I have followed many examples of how to create an alert popup window and have failed.
Background:
added alert component to stage and delete, component shows up in library
added import mx.controls.Alert
to actions layer first frame of fla file
When I control enter to create the file, I get these wierd errors, 16 of them in fact
rainging form there is no method to no poperty
here they are:
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\managers\PopUpManager.as: Line 123: There is no method with the name 'deactivate'.
          SystemManager.deactivate(o);
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\TextArea.as: Line 361: There is no property with the name '_color'.
       _color = UIObject.textColorList;
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\TextArea.as: Line 363: There is no property with the name 'focusTextField'.
       focusTextField = label;
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\containers\Window.as: Line 348: There is no property with the name 'clickHandler'.
       button_mc.clickHandler = delegateClick;
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\alertClasses\AlertForm.as: Line 159: There is no method with the name 'createClassChildAtDepth'.
       var o:Button = Button(createClassChildAtDepth(Button, DepthManager.kTop,
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\alertClasses\AlertForm.as: Line 166: There is no property with the name 'clickHandler'.
       o.clickHandler = onClick;
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\alertClasses\AlertForm.as: Line 167: There is no property with the name 'detail'.
       o.detail = detail;
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\alertClasses\AlertForm.as: Line 212: There is no property with the name 'width'.
        extent.width += icon_mc.width + 8;
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\alertClasses\AlertForm.as: Line 218: There is no property with the name 'height'.
        var i:Number = icon_mc.height - (numlines * (extent.height + 4));
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\alertClasses\AlertForm.as: Line 263: There is no property with the name 'height'.
        icon_mc.move(x, (height - buttons[0].height - icon_mc.height) / 2);
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\alertClasses\AlertForm.as: Line 264: There is no property with the name 'width'.
        x += icon_mc.width + 8;
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\scrollClasses\ScrollBar.as: Line 272: There is no property with the name 'height'.
        var y:Number = ((pos-minPos) * (scrollTrack_mc.height-scrollThumb_mc._height) / (maxPos - minPos)) + scrollTrack_mc.top;
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\scrollClasses\ScrollBar.as: Line 494: There is no property with the name 'height'.
        thumbHeight = pageSize / (maxPos-minPos+pageSize) * o.height;
**Error** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\scrollClasses\ScrollBar.as: Line 497: There is no property with the name 'height'.
         if (o.height < st.minHeight)
**Warning** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\Alert.as: Line 27: There is no class or package with the name 'mx.containers' found in package 'mx'.
      static var symbolOwner:Object = Window;
**Warning** C:\Users\jim\AppData\Local\Macromedia\Flash 8\en\Configuration\Classes\mx\controls\Alert.as: Line 213: There is no class or package with the name 'mx.controls.alertClasses' found in package 'mx.controls'.
       var tmp = AlertForm;
Total ActionScript Errors: 16   Reported Errors: 16
funny thing is that when i create the same code
import etc alert.show etc in a new fla file it works just fine, when i use the working code from the new fla and place it here not changing anything it fails with the previoulsy mentioned errors,
I have checked the class path, i have added the direct folder of the classes, I have even tried to import the .AS file it self with no luck.
Any suggestions here?
Thanks
Jim

Answer 1

Ahhhhh...thank you!
One other question that is related...
So now it imports the class ApplicationMain.as.
But now there are path issues that I can't quite figure out.
So I have a scene called Content - my main and only scene.
In that scene there is a MC called content_MC as well as 2 buttons; a print button and a start over button.
Inside the content_MC there are several objects, including those that are labeled with instances that are meant to point the ApplicationMain file to them so they can have the ApplicationMain.as class applied to them.
I have an AS layer/frame inside content_MC that imports the ApplicationMain class just as you suggested.
Inside the ApplicationMain.as file the targets are registered as e1, e2, e3, e4, etc.
These instances, e1, e2, etc, are located inside content_MC on a layer below the AS layer where the import of the ApplicationMain code is located.
When I export the SWF I get error 1120 access to undefined property e1. This error occurs for each instance I am trying to target.
This is clearly a path issue but  don't understand...?
Shouldn't those instances be found by the ApplicationMain.as class since they are resident in the same movie clip where the ApplicationMain.as class is being imported into?
Here's how the targets are registered in the ApplicationMain.as file...
_transformTool.targets = [e1, e2, e3, e4, f1, f2, f3, f4, f5, f6, f7, f8];
Man, AS3 is making my head spin! 
Thanks a ton for your help!