Flash Error #1034: Type Coercion failed when running with Flash Develop

I have compiled an SWC and am using it in a flashdevelop project.

When I compile the project all is fine, but when I run/debug the project I get:

[Fault] exception, information=TypeError: Error #1034: Type Coercion failed: cannot convert flash.display::MovieClip@43e3f99 to 开发者_如何学Cfl.controls.Button.

The following line is causing the fault:

public var loginPanel:loginControl  = new loginControl();  

LoginControlView is the movieclip name. loginControlView is the asset name. and there is a class called loginControl that extends loginControlView

The LoginControlView movieclip contains 2 textboxes and a button (fl.controls)

The project runs fine if I compile/run/debug from the Flash IDE.

Any suggestions?

Ok I found a solution. Included in my classpaths was a path to the fl.controls folder of the flash install. But the fl.controls where also being exported with my SWC. I assume having two definitions of the same class was causing the problem, because when I removed the classpath all worked fine.

as you probably know, fl.controls package contains components for Flash Professional CS5 and earlier which can be used in Flash Develop by bundling the components in a .swc: How do I use an Adobe control from fl.controls.* in FlashDevelop?

since your project compiles in Flash Professional without error the problem must lie within the exported fl.controls.* .swc.

instead of using an fl.contros.* .swc, since you're using Flash Develop, you could use the spark.controls package or mx.controls package from the Flex 4.1 SDK. both packages include a Button and TextInput classes.