Weird bug with stringtable (.xml)

[HazJ 1288]

Hi all. I am experiencing a VERY strange bug with my stringtable (.xml) - I have used them quite a lot but, with this one mission, it doesn't seem to work in the mission selection screen, but once you load in, it all works, however, I have tried others that work/show fine in the mission selection from other projects, doesn't show in list (only in this specific mission), something seems to be stopping it as it works fine in another mission / mission folder... Any ideas? :S
The code in .xml appears to be fine to me. I've also checked it with an .xml online parser and validator, all seems fine there too.
Look at the screenshots and you'll see what I mean:
https://s26.postimg.io/sb4ry0prt/107410_20160916192341_1.png
https://s26.postimg.io/nnypw92ex/107410_20160916192421_1.png

In an attempt to try to narrow down the problem, I reduced the .xml code to just the following but it didn't make any difference at all.

<?xml version="1.0" encoding="utf-8"?>
<Project name="Wasteland">
	<Package name="Haz">
		<Container name="General">
			<Key ID="STR_WS_Example">
				<English>Example</English>
				<French>Example</French>
			</Key>
		</Container>
	</Package>
</Project>

[HazJ 1288]

Never mind, just fixed it by re-making the mission.sqm file. Really weird!