Mpt 4.5 6a Alltel RAZR V3 Will Not Stay Connected In MPT 4.5.6?

Alltel RAZR V3 will not stay connected in MPT 4.5.6? - mpt 4.5 6a

I have the latest version of Motorola Phone Tools and I followed the instructions load on my Razr. The first attempt was all good and even has a ring tone from an MP3 file from my PC. Now, and increasingly since then I see a connection RAZR and the image is initialized (initialized and starts), then a forbidden symbol appears on the screen, mini-phone on my desk after a bubble, which states that "the mobile device not connected. I've tried uninstalling and reinstalling everything - even stuff from the Device Manager Hat. anyone have a solution? Thanks in advance!