Android :: SDK 1.5 Build Error

I'm attempting to test one of my applications in the SDK1.5 environment, but when it tries to build, I get this error:

[2009-04-15 12:33:13 - Battle Bricks] trouble processing "java/awt/font/NumericShaper.class": [2009-04-15 12:33:13 - Battle Bricks] Attempt to include a core VM class in something other than a core library. It is likely that you have attempted to include the core library from a desktop virtual machine into an application, which will most assuredly not work. If you really intend to build a core library -- which is only appropriate as part of creating a full virtual machine binary, as opposed to compiling an application -- then use the "--core-library" option to suppress this error message. If you go ahead and use "--core-library" but are in fact building an application, then please be aware that your build will still fail at some point; you will simply be denied the pleasure of reading this helpful error message.

But I've tested my other application in the environment, and it worked fine. I've looked through my imports, and none of my files import NumericShaper, so I'm confused as to why it seems to think that it is being referenced.