I realize this thread is a month old, but I'm going to reply anyway because its the logic sub-forum and has had like 4 threads since then, and also because I feel I can contribute something to this.
I believe that specific error message appears whenever you try to send an instant pulse (
https://starmadedock.net/threads/instant-pulses-and-some-starmades-logic-details.8117/) through wireless.
You'd be surprised if you counted the number of instant pulses that are generated by mistake even the simplest of circuits you create, which is why most people may not even be aware an instant pulse is being sent through wireless by them, hence the surprise new error message.
To clarify, a 0.5sec ON you sent could actually be a 0.5sec ON followed by an instant pulse ON (a simple circuit component used to create this is used alomost everywhere). The instant pulse part of the signal is ignored the wireless modules which give the error message as they ignore it, but the 0.5sec ON is sent, and you think its a useless error message because you do not see any noticeable change in the signal, or the circuit behavior (most of the time, circuits work just fine and do not differentiate between a 0.5sec ON and a 0.5sec ON followed by an instant pulse ON). (Most players only notice instant pulses when it matters lol)
If the error message is what I think it is, then this feature (yes, its a feature, and there must be some good reason Schema decided to implement this (optimization of some sort maybe? I wouldn't be surprised if instant pulses through wireless caused the game mini 'heart attacks')) shouldn't break 99.9% of circuits, and if you are in the 0.1% of people who *do* send instant pulses through wireless (I have no idea why someone would do that, but whatever), then bad news- your circuits are broke, and you'll simply have to change them to generate an instant pulse on the other entity instead of sending em through wireless.