Thanks for the picture.
A 10MHz amplifier on a bread-board? The poor thing. Probably shock itself to death, oscillating like crazy.
See the data sheet, section about grounding:
"Power Supplies and Grounding
Use a stable dc voltage to power the instrumentation amplifier.
Noise on the supply pins (e.g. high freq noise from a switch-mode power supply - my addition) can adversely affect performance.
Place a 0.1 μF capacitor as close as possible to each supply pin. Because the length of the bypass capacitor leads is critical at high frequency, surface-mount capacitors are recommended.
A ground plane layer helps ... etc"
See also the section about radio interference.
Better get the proper evaluation board from ADI, or follow their layout in creating your own. The proto-board is probably not going to work.
Best Regards,
Dirk