Include file \zaddons\dayz_code\system\BIS_Effects\init.sqf not found

[Include file \zaddons\dayz_code\system\BIS_Effects\init.sqf not found]

I have been getting this error while connecting to dayz overpoch server any ideas on how to fix 

 

error Include file \zaddons\dayz_code\system\BIS_Effects\init.sqf not found

[Map Maker]

So i have been wanting to make a map for some time and have been trying and trying and my terrains look very bad so i have now decided to see is any one i willing to make the base terrain what i mean by that is just the base terrain is  no trees no road no buildings etc just the land mass water hills etc i will be paying for this. the map i would like to create is this https://www.google.co.uk/maps/@39.6350129,2.7992858,10.59z i want the land to span 13km by 13km with about 5km water around it if anyone is intrested hit me up a pm thanks Xile 

[L3DT Help and Advice]

So i have been wanting to make a map in arma and was wondering if anyone had any good guides or tutorials for L3DT to make a perfect island in the ocean 

[Imported obj model into O2]

So i have imported an obj file into o2. but the model is tiny what should i do 

[Defult Model Scale]

So i have recently started modding A3 and i wanted to know what the default scale was for cars