Okay so apparently it was totally my fault and I somehow managed to break things with a control character in the filename. Sorry for bothering you KK and thanks for the reply. You can mark this as a non-issue

In T166876#2344095, @BIS_fnc_KK wrote:

your second screenshot executes on the client. to get server execution you need to put it in the larger field and press server exec

In T158681#2194277, @dedmen wrote:

Deleting base game content is not the solution to this.
But if the server says it requires DLCs which it actually does not require that would be the real issue

might be related: https://feedback.bistudio.com/T160213

In T160204#2224716, @Ezcoo wrote:

I've just closed server exe, as I didn't think about that it could make a difference. When it comes to the bat file, my main motivation was to shorten the iteration cycle for editing multiplayer missions so having to close and restart the client kind of is the actual issue. When you have e.g. Tanoa as map, it takes a moment for the game to fire up even with the game on an ultra fast SSD drive.

I downloaded and tested the provided mission, as well as tried some more details with the following result:

Is this included in today's Update 1.98?
The Spotrep doesn't mention it anywhere: https://dev.arma3.com/post/spotrep-00093

I was not able to reproduce the error on my machine with the current DEV-branch, can someone else verify that fix too?

In T147191#2042577, @BIS_fnc_KK wrote:

you can use arma 3 client with -server start up param

In T147191#2042211, @dedmen wrote:

Should be fixed on dev branch, please test

In T147191#2034128, @BIS_fnc_KK wrote:

There has been some internal work done on it so don't give up just yet

In T142655#1919706, @Astaroth wrote:

Hi,
thanks for the report. You need go back to the place where you got task for Finding Eddie and go to close to the strange structure which you saw before. Mission will continue. I will forward to our designers for covering this case.

not 100% on topic here, but can you tell me why any mentions of the safeCVL parameter have been removed from the wiki?

maybe you can take a look here https://community.bistudio.com/wiki/Arma_3_Unusual_process_exit to see if your error is included in that list and try out the proposed fixes