Attempted to fix androids "ill-advised or mistaken usage of a core class" went bad

Attempted to fix androids "ill-advised or mistaken usage of a core class"
went bad

After trying to fix this on my own from what I have seen around the net I
cannot still figure out what this means:
[2013-08-15 23:58:27 - StudioTab] Dx
trouble processing "javax/xml/namespace/QName.class":
Ill-advised or mistaken usage of a core class (java.* or javax.*)
when not building a core library.
This is often due to inadvertently including a core library file
in your application's project, when using an IDE (such as
Eclipse). If you are sure you're not intentionally defining a
core class, then this is the most likely explanation of what's
going on.
However, you might actually be trying to define a class in a core
namespace, the source of which you may have taken, for example,
from a non-Android virtual machine project. This will most
assuredly not work. At a minimum, it jeopardizes the
compatibility of your app with future versions of the platform.
It is also often of questionable legality.
If you really intend to build a core library -- which is only
appropriate as part of creating a full virtual machine
distribution, 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 be forewarned that your application
will still fail to build or run, at some point. Please be
prepared for angry customers who find, for example, that your
application ceases to function once they upgrade their operating
system. You will be to blame for this problem.
If you are legitimately using some code that happens to be in a
core package, then the easiest safe alternative you have is to
repackage that code. That is, move the classes in question into
your own package namespace. This means that they will never be in
conflict with core system classes. JarJar is a tool that may help
you in this endeavor. If you find that you cannot do this, then
that is an indication that the path you are on will ultimately
lead to pain, suffering, grief, and lamentation.
[2013-08-15 23:58:27 - StudioTab] Dx 1 error; aborting
[2013-08-15 23:58:27 - StudioTab] Conversion to Dalvik format failed with
error 1
I have no idea what this is really telling me or where to start look. Am I
recursively including a library somehow? My build path under order and
export are as thus:
Google APIs [Android 3.0]
Android Dependencies
annotations.jar
Android Private Libraries
A ton of jars for various functionality i need: CSV writing, talking
to the google calendar somehow...etc...etc. They are jars I
found on the net, not ripped from another project but found to solve
problems i.e. how to access google calendar from the device and
read/write to it etc... is this where my problem lies? I can provide
a complete list of the jars I am using here.
android-support-v4.jar
I added that one as an external jar myself. I forget what it needs it for
but if I remove it it cannot use somethings weird stuff like
FragmentActivity and that.
So where do I even begin to look so I can pick this project back up
again...get it compiling and running on an emulator.