I'm trying to use the [SmugFig](http://soft.antonspaans.com/products/smugfig-api) SmugMug API on Android. It was designed for J2SE I would imagine, so I'm not sure it will even work on Android, but I figured it was worth trying as opposed to trying to create my own API. 

When I load the project though, I get the following error:

```
Conversion to Dalvik format failed: Unable to execute dex: null

```

It doesn't say what package it fails on, just "Android Packaging Problem", but it did not do this before I added SmugFig and it's dependency JARS to the build path.

Where should I look? Or does this mainly me that it just won't work with those libraries?