AI cs 2: How to fill closed path with convex rounding ?

[pieps31995667kb13]

Please find example attached. 
On right sight and on top you see paths I want to fill INSIDE with color.
On left side you see the way Illustrator CS 2 it fills incorrect. 
How can I achieve the filling inside, in correctly way ? The Path is completely closed. 

[Ton Frederiks]

Does not look like closed.

Check in the Layers panel if you have multiple paths on top of each other.

[pieps31995667kb13]

I have only one layer and the path is closed. 

[Ton Frederiks]

Select the object and choose Object > Path > Join

[pieps31995667kb13]

I did - but there is only a sound and no change a the path. And no error warning ... 
But I can't find any Point which is not exactly at the sam position like it's next point ... 

[Ton Frederiks]

Works for me, you do not see a change after joining, you need to fill the path to see it.

If you want to see the open path, use the direct selection tool and click on a corner point to select it an move it.

[pieps31995667kb13]

After joinimg the path it fills roundings only INSIDE, as concav Rounding, not as convex rounding. 

[pieps31995667kb13]

Download example 

[Monika Gause]

It's a compound path, but it's not closed.

Release the compound path and then close it first.

[pieps31995667kb13]

Where it is not closed ? I can't find any point where it is not closed.

[pieps31995667kb13]

May be it's a problem because of older version of illustrator (CS 2) ? 
But how can I resolve it ? I need my path filled inside, not filled partly outside. 

[pieps31995667kb13 · Accepted solution]

Now I found the Solution: 
I need to select only 2 path meeting in one point (with a rectangle selection araund it) and join both paths. And so on. THEN it works ! Thanks to all which joined my question with answers. 

[Ton Frederiks]

Good to hear you got it solved. Illustrator was probably improved since CS2 and made it easier to join more points in one go.