If SpectraSuite does not start properly but stops at its colorful logo, then you most likely need to reset the spectrometer. To do this, follow these steps:
...and things should be back to normal.
The HR2000(+) spectrometers have a habit of sometimes crashing during a measurement. When this happens, new spectra are not acquired (or displayed) anymore.
To fix this, follow the steps described above for "SpectraSuite freezes during start".