level-db golang implementation writing over existing values?

I am trying to use the leveldb-g implementation and having some issues.

Here is my implementaation (based on another answer here

package propertyData

import (
	"code.google.com/p/leveldb-go/leveldb/db"
	"code.google.com/p/leveldb-go/leveldb/table"
	"log"
	"runtime"
)

const (
	DBFILE = "./admin.db"
)

var DBFS = db.DefaultFileSystem

func AddDataToProperty(property, value string) {
	Connection, e := DBFS.Create(DBFILE)
	Check(e)
	w := table.NewWriter(Connection, nil)
	defer w.Close()

	e = w.Set([]byte(property), []byte(value), nil)
}

func GetDataFromProperty(property string) string {

	v := findOne([]byte(property))

	return string(v)
}

func findOne(k []byte) []byte {
	Connection, e := DBFS.Open(DBFILE)
	Check(e)
	r := table.NewReader(Connection, nil)
	v1, err := r.Get([]byte(k), nil)
	if err != nil {
		log.Fatalf("An error occurred finding one", err.Error())
	}

	return v1

}

func Check(e error) {
	if e != nil {
		_, file, line, _ := runtime.Caller(1)
		log.Fatalf("Bad Happened: %s, %s", file, line)
	}
}

and a test:

package propertyData

import (
	"com.levelsbeyond/admin/propertyData"
	"log"
	"os"
	"testing"
)

func TestAddProperty(t *testing.T) {
	os.RemoveAll("./admin.db")

	propertyData.AddDataToProperty("test.property", "one")
	propertyData.AddDataToProperty("test.property", "two")
	propertyData.AddDataToProperty("test.property", "three")

	propertyValue := propertyData.GetDataFromProperty("test.property")
	log.Println(propertyValue)

	propertyData.AddDataToProperty("test.different", "four")
	propertyValue = propertyData.GetDataFromProperty("test.different")
	log.Println(propertyValue)

	propertyValue = propertyData.GetDataFromProperty("test.property")
	log.Println(propertyValue)

}

Which outputs:

=== RUN TestAddProperty
2013/09/16 10:47:50 three
2013/09/16 10:47:50 four
2013/09/16 10:47:50 
--- PASS: TestAddProperty (0.00 seconds)

It's like writing the second property ("property.different") Overwrites the values I already have in there. I'm sure I'm doing something dumb, any help would be greatly appreciated.

EDIT

I added some error handling in the findOne function (thanks @miltonb) and I actually am getting an error there, though I'm not sure what to make of it:

=== RUN TestAddProperty
2013/09/16 15:36:34 three
2013/09/16 15:36:34 four
2013/09/16 15:36:34 An error occurred finding one%!(EXTRA string=leveldb/db: not found)
exit status 1
FAIL	command-line-arguments	0.018s

Change to another implementation of leveldb with what looks to be better documentation such as levidb http://godoc.org/github.com/jmhodges/levigo.