Just an update on my problem

I am trying to figure out which device is not working. The trains run, the Keyboard items respond to my manually operating them, but the sensors connected to the L88 and S88s do not activate the signals and switches. Similarly, when I click on an item in Memory, nothing happens. My layout has been in operation for years and the only thing I changed was to try to add an 60880 to Bus 3. I removed that and changed the voltage back to 12V.

So, the question(s) are how do I identify the 'broken' item. Seems it could be the L88. Should I first remove from the CS2 and reconnect, maybe first detach all S88s on Bus1 and Bus2. Once I get working, I assume not to use the 60880. Other ideas

Thanks
Harvey

Just an update and essentially a happy conclusion (mostly). I had written to Marklin asking for assistance - to explain what the message meant. Unfortunately they had not responded (which is understandable given likely staffing issues and end of season rushes). So, in thinking about this problem, but not having the knowledge or tools to research I thought this could be due to a hardware (L88, CS2, wires) or software (something in the coding got corrupted when I tried to attach Bus 3). As the CS2 worked and all my signals and switching tracks worked I thought it may be the L88. I did buy a new one but the problem (error message) continued to appear even though I deleted the original L88 from the CS2. So, I felt the issue was software. I had a backup of the CS2 and decided to reload. I am using the original L88 as all my CS2 memory instructions refer to that.

The error message did not reappear. Now, I just have to update the CS2 for some changes I had made to the passenger line sensors (I had added a few). Fortunately this is mostly written down. So, I spent a few extra dollars on a new L88 (oh well) but I solved the issue.

If anyone would like the new L88, we can chat about cost and mailing.

Regards
Harvey