Look for a mission named "mission title", if you missed the "MissionTitle" section in the Mission Editor "Mission" menu, "Language Locaization". Otherwise, using your examples from above, be certain, as you seem aware, to have the Folder and the file the same exact "name", such as:
Game is in "C:\Games \SH4 \" (whatever your install path). The mission is then "C:\Games \SH4 \Data \SingleMissions \my mission \my mission.mis" - note that there is NO space in SingleMissions, but so long as the folder and the mis file have the same name, spaces are fine. Do note that if your OS is other than Windows, you do need to match upper case and lower case in all "names", including files and folders. I included extra spaces in the hard drive paths above, ahead of the backslashes, so that they can "wrap" on the text display lines of the site.
