LG VX-7000

ok this bug is really stressin me out like crazy!!!......i emailed .mid ringtones to my phone so i can save them as my ringtones and it says "Memory Full" when trying to save them, but thats impossible because i have 0% usage of my memory!! i have saved 14 ringtones [no voice recorded ringtones] on my phone and never had a problem before saving them jsut all of a suddden this started happening. Also, i deleted all the verzion crappy ringtones that came with it [the ones that were able to get deleted]. can someone please tell me what the f*** is up with this???