OK, lets set up a hypothetical situation...
If I had eprofile manager installed with a schedule set up, minigps which some cells set up with profile chanes and also use neu voice to choose a profile of my choice when needed.
I know it might be a bit extreme. :evil:

But what if my schedule changed to a profile in a cell that didn't allow it? :o

Since all the programs you're talking about are event based, nothing terribly interesting will happen.

An eProfiles schedule will change the profile based on a certain time. If this profile isn't the same one you set up for a certain area in miniGPS, and you are in that area, nothing will happen - because miniGPS only changes when you CHANGE cells - until you move into a different cell.

I did this yesterday with eProfiles and miniGPS at the same time- eProfiles changed a miniGPS profile while at work, but miniGPS didn't even notice until I moved out of my "work" group and into my "home" group.

To answer your question, the programs won't exactly conflict. Worst case scenario (a certain timed profile activates at the same time as you moving into a new miniGPS group while activating a Neuvoice profile) will probably just cause the profiles to quickly change as each program is invoked in turn, until the last one wins.