World Open Error

I was trying toopen a world I am working on and got the following message.

Originally Posted by Alice 2.2

Unable to load world: F:\Alice 2.2\Visor\Visor V.1.2.2.a2w




Alice version: 2.2 6/10/2009



Throwable that caused the error:

java.util.zip.ZipException: invalid CEN header (bad signature)

at java.util.zip.ZipFile.open(Native Method)

at java.util.zip.ZipFile.<init>(Unknown Source)

at java.util.zip.ZipFile.<init>(Unknown Source)

at edu.cmu.cs.stage3.io.ZipFileTreeLoader.open(ZipFil eTreeLoader.java:66)

at edu.cmu.cs.stage3.alice.authoringtool.AuthoringToo l.loadWorld(AuthoringTool.java:1903)

at edu.cmu.cs.stage3.alice.authoringtool.AuthoringToo l.loadWorld(AuthoringTool.java:1870)

at edu.cmu.cs.stage3.alice.authoringtool.AuthoringToo l.showStartUpDialog(AuthoringTool.java:1338)

at edu.cmu.cs.stage3.alice.authoringtool.AuthoringToo l.<init>(AuthoringTool.java:447)

at edu.cmu.cs.stage3.alice.authoringtool.JAlice.main( JAlice.java:133)

I can post the world if needed.
PLEASE HELP.

Here's the world I was requested to post.

Anyone have any ideas on how to open a files that gets this error?