[SOLVED] Working on PC, cannot find executable on Android

[Blegh]

Hey guys and girls.

So after a massive amount of ballache sorting it all out I've got my first two ISO's (first time trying to emulate on my phone so I can carry less stuff).
Patapon 2 and Disgaea.

I tested it on the PC version of PPSSPP and they work fine, excellent, I'm happy.

So I put them onto my SD card and slot it into my android phone (Sony Z2).. After a bit of a cuffuffle trying to find the files on my SD card, There must be like 3 SD folders even though only SD1 is a memory card wtf is with that?
Anyway I find the folder on my phone and in the folder are 2 grey boxes with ? on them for thumbnails.

When I click them it says "Could not load game. Could not find executable disc0/PSP_Game/SYSDIR/BOO".. then the screen cuts it off.
Wondering if I'd corrupted it transfering it or disconnecting the USB/Micro SD doodad, I removed the SD card transfered them back over to the PC and tested them again they worked fine...

Am I storing them in the wrong place? I just made a PPSSPP folder on my SD card.
Is there an issue that means PPSSPP can't read them off my SD card? From what I've read trying to find a fix this, it isn't the case.
Or is it just that the two games I've tried to convert just don't work with Android or something??