cannot open MPT Multimedia on v262

[IMiss522]

Hello all,
I have a v262 Cricket phone that I have been fussing with trying to download ringtones and graphics to, but every time I try to transfer files to/from the phone, I get an error that the modem cannot communicate with the phone or the action failed. I can plug the phone into the computer and it is recognised; I can synch the calendar and phonebook, but any multimedia application simply will not work.
The worst part of all this is, I bought this particular phone because I wanted to be able to customise it, but the BREW features won't work, and neither will the MPT 3.0 software. I've done the updates several times, but it's just not letting me do anything!!!!!!

Please help!!

522