Sondjata, are you using 0.9.10? Version 0.9.9 fixed your first problem, but introduced a second problem trying to expand the file (I tried to use a fancy technique that didn't require gnutar, and I failed miserably). 0.9.10 fixes that problem by going back to using gnutar again.

Sorry you're the guinea pig in this. Just think of all the childrens' lives you're saving with your selfless testing.

If, with 0.9.10, you're still having the problem, you might need to do this manually and report what's going on to me.

Go to the mmc card where you downloaded the file, and then untar it. Say you downloaded to mmc1:
Copy and paste any errors here, please!