Campaigns in sub-folders not displaying in selection screen

To try and keep my Campaign folder manageable, I tend to put each campaign's files in a sub-folder which generally works but I've added some campaigns today and as you can see from the screenshot below, several of them just display a blank line so I have no idea which one they are, making it impossible to select the one I want.

http://imageshack.us/photo/my-images/507/arma2oa2012082322312471.png/

These are the campaigns I have in subfolders and I've marked the ones that correctly display with an x:

Chesty Puller

Delta Force

DesertFever x

Fallout campaign

Ghost Recon

Hammer of Thor x

Operation Detachment Delta x

Operation Mighty Justice

PIROG

Rainy Fall

Seal Team Six DEVGRU

SEALTEAMSIX4 V10.0 x

SwordTeam x

Wings x

I know MPMissions doesn't support subfolders (yet, I know it's being worked on) but I believe Missions and Campaigns are meant to and it clearly doe

Still having this problem. Would be nice to have a explanation as to why this is happening.