install downloaded Themes on 6600
i use Series 60 Theme Studio to create .SIS theme file

the file is created fine, and using irda it works fine

i send this file as downloadable
for example:-

and i send it OTA the mobile download it but when install it gives a problem

my mime type is

is any wrong with that?
is any custom header can be added?

Now my questions are :

1- What is the exact mime type setting s for
a- Nokia series 40 Themes
b- Nokia series 60 Themes
2- Is there any special setting to be done while sending the theme data in the output stream of a servlet.