[Boris The Spider]

Thanks for the replies.

I did as suggested and placed the ".properties" in front of the _ru.
Still no Description veiwable for host.

No, the "_ru" needs to go before the ".properties", i.e. "Mission XXX_ru.properties".

To reiterate:
I have tried a "_ru.properties" file ext., a "-ru" file ext. and a ".properties" file in 4.09b1m mods on.

I as host can't see Description, but players can.

"_ru.properties" is the only file name that will work. Don't make it an extention to the ".properties" extention.
i.e. "Mission XXX_ru.properties.properties" is an invalid file name. All you need is "_ru.properties" added to the mission name.

As far as creating a 4.09b1m "mods on" coop, It does not create a _ru.properties that I see.

It will only 'create' one if one is not present. Otherwise it should.

If I look into renaming it, I have to add the .properties either way.
Although it does say the _ru file is a properties file.

Does that file have any text in it? Is there a similarly named ".properties" file? If so copy the text from the ".properties" into the "_ru.properties".

THIS IS DRIVING ME NUTS!
FN

Welcome to the world of mission building. Once you get this sorted things should move along nicely for you. Be patient, it will come.

Oh yeah, one more thing...it may seem silly but, do BOTH files (.mis and .properties) have exactly the same name? It is case sensitive so If the name is "Mission XXX" the other file can't be Mission xxx".
They must have no characters other than letters, numbers, single spaces and the "_" underscore. Other characters, such as "~", "/", "@" etc. are not acceptable file structure names.