Ok, when you are connecting to bitpim are you dropping the sync that pops up on your phone? That error message will pop up if you haven't.
When you talk about "pop up", do you mean it as when I connect the USB cable between the ET (LG EnV Touch, for short) and one of the USB ports, that thing pops up (with external memory supplied inside the phone) for music transfer, right? If that's what you mean, then yes. It does pop up every time it is connected between PC and USB, but not towards the A/C wall charger. You can still dissmiss the pop-up on the phone AFTER it has been successfully "connected". The phone will still work as normal.
As for BitPim, do you mean that as detecting the phone whether it has a comm port or what?