I know at my job, years back we went from voice dispatch to a computer program, and our in-house computer tech said "it's going live today". A week later, there were STILL interface issues. A month later, we had an unstable system that crashed every 15 minutes. 3 months later, all the bugs were hammered out & we've had a stable system ever since.
The moral of my story is this:
Computers don't always co-operate, the techs can't always foresee every issue that crops up, and patience really IS a virtue.