If you had the kind heart to try and help me on another topic about skill usage problems http://rmrk.net/index.php?topic=21605.0 (http://rmrk.net/index.php?topic=21605.0) then thankyou.
Now recently, i found out what was actually causing this, by sheer coincidence.
While constructing some blue magic skills for one of my characters, when i test played to test em, yes. You guessed, i could manage to use them AGAIN. So, doing what i did last time, i managed to get the skill to work. Until i noticed i noticed that i'd forgotten to change its attribute from "fire" to "earth". Went back to test again...It became blacked out again!
So, my discovery was, for some reason, the element of my spells seemed to be affecting their availablility?
Well, during writing this topic...i've only just realised that the attributes have a "weapon" and "magic" option.
I realise i must select magic...
I'll post this anyway incase anyone else has this problem anyway...lol