yes i know, it must to be.. but does'nt work in my case (if you read my previous post you can see it..)
what can i do ?

I've also tried to delete the joomdoc record in assets table and reconfigure it from global configuration
but still does'nt work :(

After many test i've seen that 4.0.2 pro has many bugs !!

1. installing 4.0.2 as fresh i've seen some error on assets table (look two attached file)
2. to upgrade from a 3.4.6 to 4.0.2 i've unistalled 3.4.6 , clean assets table and install 4.0.2 but the installer has wrong conversion script !! I've seen that 3.4.6 is based on joomdoc, joomdoc_file, joomdoc_license tables. 4.0.2 is based on joomdoc, joomdoc_field, joomdoc_file, joomdoc_flat, joomdoc_license, joomdoc_option table !
3. installing 4.0.2 as fresh without any previous joomdoc tables and Refreshing Documents, also in this case the module does'nt show & download documents !!
4. i delete all files on documents folder then i Refresh on backend but the tables joomdoc_file, joomdoc_flat are not cleaned
5. on same 4.0.2 test site i upload a file using backend/joomdoc and it's work fine !

I think that 4.0.2 need some fix !! i hope Artio developer are looking here..

Hello, thanks we will check your tests.

please fix the global permission bug..

take a look here: reviews
the reviews are bad.. :(

Hello, we are testing JoomDOC permissions and have no such problems as you. I think that you did some wrong with database during process which you desribed here www.artio.net/support-forums/joomdoc/cus.../v3-to-v4-0-2#44645.