Mission Editor bug report

Working on a big mission here and while trying to test it this bug report appeared (check attached image). I simply hit "Fly" and when in the mission I chose a slot then this happened. I clicked "OK" and was able to continue the mission! Any idea what this is?

S!

Sorry, forgot to upload... Here it is

Its a mission script error associated with your syntax. Check any code you are running around line 334 for any instance of "DCS". You are likely loading something at initialization or as part of a script in your saved games/DCS/Scripts folder.

Its a mission script error associated with your syntax. Check any code you are running around line 334 for any instance of "DCS". You are likely loading something at initialization or as part of a script in your saved games/DCS/Scripts folder.

I'm running Ciribob's SimpleSlotBlock script which is saved in saved games/DCS/Scripts/hooks

Line 334? Hmmm. So far added this script only and tens of airframes' names in the "do script" option that are supposed to be blocked at mission start. I'll try and play with the conditions of the triggers a bit.

Did you add the GameGUI file to /scripts/hooks?

Did you add the GameGUI file to /scripts/hooks?

Yes. Actually I have the files in both /Scripts and /Scripts/hooks just to make sure.

This is line 334 amidst the other lines below:

}, -- end of [3]

["name"] = "blue",
           ["country"] = 
           {
               [1] = 
               {
                   ["id"] = 21,
                   ["name"] = "Australia",
               }, -- end of [1]
               [2] = 
               {
                   ["id"] = 11,
                   ["name"] = "Belgium",
               }, -- end of [2]
               [3] = 
               {
                   ["id"] = 8,
                   ["name"] = "Canada",
               }, -- end of [3]
               [4] = 
               {
                   ["id"] = 28,
                   ["name"] = "Croatia",
               }, -- end of [4]
               [5] = 
               {
                   ["id"] = 26,
                   ["name"] = "Czech Republic",
               }, -- end of [5]
               [6] = 
               {
                   ["id"] = 13,
                   ["name"] = "Denmark",
               }, -- end of [6]
               [7] = 
               {
                   ["id"] = 5,
                   ["name"] = "France",
               }, -- end of [7]
               [8] = 
               {

EDIT:

Fixed! The issue was having some scripts running simultaneously.