kmetis.exe has stopped working


I downloaded the windows version for metis 4.0, read the manual, created a tiny input file (14 vertices and 22 edges), and tested kmetis successfully:
kmetis.exe file.txt 3

However, now I'm trying to run the tool to partition a graph but it keeps crashing showing the following error message:
kmetis.exe has stopped working

The input file I'm using has 9603 vertices and 9602 edges. As you can see the number of edges is 1 lower than the number of vertices because my graph is actually a big tree data structure (I hope I'm using the right tool).

My pc has a Core 2 Duo processor, 4GB RAM, Windows 7 32bit.

My input file is very small (758KB) and contains public information, I could email it if needed.

Any help would be greatly appreciated!