or "Communications port not available".

I've finally SOLVED the problem I was having  with Motorola Phone Tools. My
V3i phone stopped talking to my PC but it was fine on my wifes PC. I still
don't know the exact cause but I wanted to get the solution I found out
there in case it helps others....

I'd tried un-installing and re-installing the MPT but that did NOT work.

My problem seemed to be related to the modem drivers. When I looked at the
modem tab on "Phone and Modem options" I had two entries:

Standard Modem  COM3
Motorola USB Modem  COM3

It tried changing them to different COM ports but that didn't work.

Here is what I did to solve the problem...

1) Dsconnected the phone.

2) Right click and removed the "Standard modem" and the "Motorola USB modem"
from "Phone and Modem Options (the modem tab). If you have other modems
installed take care not to delete the wrong ones.

3) Used "add/remove programs" from the control panel to uninstall the
Motorola Phone Tools. (When prompted, select the option to keep your
Motorola phone documents).

4) Rebooted my PC. This step seems to be important. Possibly because it
resets COM port allocations?

5) Re-install Motorola Phone Tools from the CD following the instructions.
(I note that the Motorola USB Modem isn't installed at this stage).

6) Ran Motorola Phone Tools (actually it's started automatically unless you
uncheck the tick box during installation).

7) When prompted (and not before) Connect your phone and follow the
instructions.  (This will re-install the Motorola USB Modem).

After that it was all working again.