Problem with pickaxe model (from blender to blockland)

[Makingblah]

I'm sure it's a simple fix and a common problem, but I just can't seem to figure out what I've done wrong.
Heres what happens (I've tried to fix it myself to no avail)







and heres two .blend files where I tried to fix things.

https://www.mediafire.com/?z0qicmv0b68heoe

https://www.mediafire.com/?3mx1z25uvjojt77

I tried to use search but I don't really know what error I'm looking for.

-I also noticed a face that's invisible, but I know how to fix that.

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[Demian]

Read this section: http://forum.blockland.us/index.php?topic=157886.0#post_fixing

[Makingblah]

I followed that exact guide and I still couldn't get things to work.