"Something is linked with a stationary object" or something like that and I've got no idea how to fix that.
I believe that is fixed just by opening the mission in the editor and saving it.
While it's probably nice for BIS to have this 'live developing' the game may change quite a bit between versions so you can even have scripts not working because they suddenly decided to either remove a command you were using or alter the way it works..
So that error IIRC means that some object has been replaced or removed or something.
I'm not sure where you are getting these errors from
How do you launch the game?
If you just do a vanilla launch the game by default does not show script errors in-game (which is really dumb IMO, was this way back in A2 already). So either add -showScriptErrors as launch parameter (right-click game name -> Properties -> SET LAUNCH OPTIONS) or if using the launcher Parameters -> Advanced -> Author and tick 'show script errors'..
Also, the errors are stored in the .rpt file located in (where ever your windows user folder drive is, probably C)/Users/<pc user name>/AppData/Local/Arma 3
At least in Win7 the AppData folder is hidden by default so may not see such a folder in your user folder unless you change the folder options to show hidden files and folders...