I teach GIS at a University and have been running into this problem on and off for months in a computer lab setting. It happens with multiple functions and basically just runs the tool very fast and says it was completed, but no data gets produced. It does not seem to be related to projections, bad geometry, or the bounding coordinates. Changing default GDB, scratch workspace, default workspace or other environment settings does not help. Restarting the PC is the only option since the students do not have Admin. rights to run a repair.
If anyone knows what is causing this, please respond!
Thanks.