Hm… I’ve not seen that error, but it definitely seems to me like a bug in NxSDK’s time probes. We have used the energy probes a fair bit, but not the time probes, so it’s possible that they’re not working for whatever reason.
If you’re interested in profiling your simulation, NengoLoihi provides some profiling that you can access with
print(sim.timers)
If that’s sufficient for what you’re doing, then you can remove the time probes and just use the NxSDK energy probes. If not, we might be able to add more things to the timers object, if you have something specific you want to time.