Before you publish the game, make sure the publish folder is empty.
And try to run your game from within the publish folder before you send it out to others.

Your profile says you use A5, but I think your problem is with A6.

Be sure to pack and send the whole publish folder not just the changed scripts - just in case your friends already have an older version of the project.

If there was a problem during publish, the published exe from before will not be deleted.

I hope this helps,

-- slacer