When performing Overlay:Intersection analysis under GIS, it creates an error when the input dataset's data fields are too many. If I recall correctly, there was some issue about reporting the number of maximum dataset field number was probably 49. Anyway, this problem still remains and need to be fixed.
To produce the error:
1. Use shelby county
2. Open GIS -> Overlay:Intersection analysis
3. Use first data Social Vulnerability Census Block Grou under Social Vulnerability Census Data
4. Use second data as Shelby COunty Developed Area under Social Vulnerability Devloped Area

This will make an error of the following but if you reduce the attribute field to low enough in census data, it will work

248828 - [ERROR] [edu.illinois.ncsa.ergo.core.analysis.types.UseCase]: Script failed
ncsa.tools.elf.core.exceptions.ActivationException: Failed executing script
at ncsa.tools.elf.scripts.modules.SerialScriptsModule.wrappedActivate(SerialScriptsModule.java:75)
at ncsa.tools.elf.core.BaseContainerModule.activate(BaseContainerModule.java:22)
at ncsa.tools.elf.core.types.ElfContainer.startModules(ElfContainer.java:225)
at ncsa.tools.elf.core.types.ElfContainer.activateScriptModules(ElfContainer.java:195)
at ncsa.tools.elf.embedded.container.EmbeddedElfContainer.wrappedStart(EmbeddedElfContainer.java:46)
at ncsa.tools.elf.core.types.ElfContainer.start(ElfContainer.java:75)
at ncsa.tools.elf.embedded.managers.EmbeddedExecutionManager.execute(EmbeddedExecutionManager.java:36)
at edu.illinois.ncsa.ergo.core.analysis.elf.ElfScriptExecutable$1.run(ElfScriptExecutable.java:141)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: ncsa.tools.elf.core.exceptions.ScriptExecutionException: java.lang.ArrayIndexOutOfBoundsException: 29968
at ncsa.tools.ogrescript.tasks.OgreScriptBaseTask.execute(OgreScriptBaseTask.java:59)
at ncsa.tools.ogrescript.modules.DynamicTaskExecutionModule.runTask(DynamicTaskExecutionModule.java:53)
at ncsa.tools.ogrescript.modules.SerialTaskExecutionModule.runTasks(SerialTaskExecutionModule.java:13)
at ncsa.tools.ogrescript.tasks.container.Try.wrappedExecute(Try.java:60)
at edu.illinois.ncsa.ergo.core.analysis.elf.tasks.AnalysisTask.wrappedExecute(AnalysisTask.java:55)
at ncsa.tools.ogrescript.tasks.OgreScriptBaseTask.execute(OgreScriptBaseTask.java:52)
at ncsa.tools.ogrescript.modules.DynamicTaskExecutionModule.runTask(DynamicTaskExecutionModule.java:53)
at ncsa.tools.ogrescript.modules.SerialTaskExecutionModule.runTasks(SerialTaskExecutionModule.java:13)
at ncsa.tools.ogrescript.OgreScript.execute(OgreScript.java:132)
at ncsa.tools.elf.scripts.modules.SerialScriptsModule.wrappedActivate(SerialScriptsModule.java:70)
... 8 more
Caused by: java.lang.ArrayIndexOutOfBoundsException: 29968
at org.geotools.data.shapefile.dbf.DbaseFileReader.fastParse(DbaseFileReader.java:608)
at org.geotools.data.shapefile.dbf.DbaseFileReader.readObject(DbaseFileReader.java:488)
at org.geotools.data.shapefile.dbf.DbaseFileReader.access$000(DbaseFileReader.java:72)
at org.geotools.data.shapefile.dbf.DbaseFileReader$Row.read(DbaseFileReader.java:80)
at org.geotools.data.shapefile.ShapefileFeatureReader.buildFeature(ShapefileFeatureReader.java:254)
at org.geotools.data.shapefile.ShapefileFeatureReader.hasNext(ShapefileFeatureReader.java:195)
at org.geotools.data.store.ContentFeatureCollection$WrappingFeatureIterator.hasNext(ContentFeatureCollection.java:143)
at edu.illinois.ncsa.ergo.gis.datasets.factories.ShapefileDatasetFactory.addFeatures(ShapefileDatasetFactory.java:404)
at edu.illinois.ncsa.ergo.gis.datasets.factories.ShapefileDatasetFactory.storeDataset(ShapefileDatasetFactory.java:335)
at edu.illinois.ncsa.ergo.gis.datasets.factories.ShapefileDatasetFactory.ingestDataset(ShapefileDatasetFactory.java:189)
at edu.illinois.ncsa.ergo.gis.datasets.factories.ShapefileDatasetFactory.ingestDataset(ShapefileDatasetFactory.java:134)
at edu.illinois.ncsa.ergo.gis.repositories.LocalRepository.ingest(LocalRepository.java:448)
at edu.illinois.ncsa.ergo.core.analysis.elf.tasks.StoreResultsTask.wrappedExecute(StoreResultsTask.java:77)
at ncsa.tools.ogrescript.tasks.OgreScriptBaseTask.execute(OgreScriptBaseTask.java:52)
... 17 more