Partially Missing Textures

Hey Guys,

I've got a big problem where my textures are rendering into the game but there are some invisible pixels in the textures for some reason? I've used these textures before and never had any issues, you can see from the link provided there are no holes in any of the textures but all of the pickaxes are having this problem - and some of the textures are overlapping as well where it looks like the pixels are larger than the single square they're supposed to take up, and end up overhanging onto the next pixel and it looks really poor.

Please help!

Cheers

RapidCrocodile