1. Create a new folder and named it "untitled folder"(need space in the middle)
2. Move any VCF files to the folder
3. Drag the VCF files to IGB

Error in console:
java.io.FileNotFoundException: /Users/admin/Desktop/data/vcf/untitled%20folder/ALL.chr20.vqsr_2of5_union_200_sites_for_validation.20101123.indels.genotypes.vcf.gz.tbi (No such file or directory)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:106)
at org.broad.tribble.util.SeekableFileStream.<init>(SeekableFileStream.java:50)
at org.broad.tribble.util.BlockCompressedInputStream.<init>(BlockCompressedInputStream.java:69)
at com.affymetrix.genometryImpl.symloader.SymLoaderTabix.isTabix(SymLoaderTabix.java:163)
at com.gene.vcfhandler.VCFHandler.createSymLoader(Unknown Source)
at com.affymetrix.genometryImpl.util.ServerUtils.determineLoader(ServerUtils.java:1098)
at com.affymetrix.igb.view.load.GeneralLoadUtils.getFeature(GeneralLoadUtils.java:1259)
at com.affymetrix.igb.view.load.GeneralLoadUtils.openURI(GeneralLoadUtils.java:1154)
at com.affymetrix.igb.IGBServiceImpl.openURI(IGBServiceImpl.java:381)
at com.affymetrix.igb.shared.OpenURIAction.openURI(OpenURIAction.java:48)
at com.affymetrix.igb.shared.OpenURIAction.openURI(OpenURIAction.java:74)
at com.affymetrix.igb.action.LoadFileAction.access$000(LoadFileAction.java:34)
at com.affymetrix.igb.action.LoadFileAction$1.openFileAction(LoadFileAction.java:50)
at com.affymetrix.genometryImpl.util.FileDropHandler.importData(FileDropHandler.java:40)
at javax.swing.TransferHandler$DropHandler.drop(TransferHandler.java:1478)
at java.awt.dnd.DropTarget.drop(DropTarget.java:434)
at javax.swing.TransferHandler$SwingDropTarget.drop(TransferHandler.java:1203)
at sun.awt.dnd.SunDropTargetContextPeer.processDropMessage(SunDropTargetContextPeer.java:519)
at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchDropEvent(SunDropTargetContextPeer.java:832)
at sun.awt.dnd.SunDropTargetContextPeer$EventDispatcher.dispatchEvent(SunDropTargetContextPeer.java:756)
at sun.awt.dnd.SunDropTargetEvent.dispatch(SunDropTargetEvent.java:30)
at java.awt.Component.dispatchEventImpl(Component.java:4593)
at java.awt.Container.dispatchEventImpl(Container.java:2143)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4566)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:680)
at java.awt.EventQueue.access$000(EventQueue.java:86)
at java.awt.EventQueue$1.run(EventQueue.java:639)
at java.awt.EventQueue$1.run(EventQueue.java:637)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98)
at java.awt.EventQueue$2.run(EventQueue.java:653)
at java.awt.EventQueue$2.run(EventQueue.java:651)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:650)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

I think the problem is IGB converting " " to 20% somewhere...

Hiral said probably Big Bed and Big Wig have the same problem.