The Cutoff Time is <= than the time step duration.

[Nikoloz]

Hello , after last update som error accures. What does it mean?

[Luca Antognini]

Hello,

Sorry for this warning message, it is nothing to worry about.

It doesn't impact the simulation and can be ignored. It will be removed in 8.1.01.

It is related to the thermalisation time of your subarrays compared to the simulation timestep. 

But it should not have been classified as a warning, only an information for internal use at PVsyst - because it should be present in the back for conditions that are actually suitable for a good simulation.