Check Track, then Engine Error?

Isn't engine error suppose to be the engine has the same ID as a Lash up? (4.2 bug) If you added it on another track something else must be going on...

There wasn't a lash up, I don't have one in the remote.

The other engine was a separate locomotive, which was found and moved to the active list.  The rogue one was inactive but would not select or move out of the list to an active state.

I finally took it off that track and put it on a different track after deleting it from the remote and then it added after failing to add as a "new" locomotive.

Did it add with the same address?    How 's the track signal?

Looking in Barry's book, and the MTH manual, I didn't see the "Engine Error" message explained.  Could someone point me to the page?

You certainly didn't look very hard. It's in the 2nd edition's Table of Contents as a sub-section on page 149:

Engine Error

Although this error message is not very common, there is one circumstance in which it will appear every time the operator attempts to add a PS2 engine to a DCS Remote that has DCS 4.1 loaded into it. This is due to a bug in DCS 4.1and 4.2 that will not allow a PS2 engine to be added to a DCS Remote if the PS2 engine that the operator is attempting to add has the same DCS ID# as does a lashup that is already in the DCS Remote.

The workaround is to use the Edit Address function to change the lashup's DCS ID# to something else, allowing the new PS2 engine to be added. If necessary, once the new PS2 engine has been added, its DCS ID# can be changed and the lashup's DCS ID# can be changed back to what it was previously. Refer to Part II - DCS Is An Operating System for Your Trains!, 5. DCS Menus, System Menu, Engine Setup for additional information regarding the Edit Address menu function.

This and a whole lot more is all in MTH’s “The DCS O Gauge Companion 2nd Edition", available for purchase as an eBook or a printed book at MTH's web store!

One benefit of the electronic copy is you can scan for error messages like this, makes it easier to find them in many cases.

I have the 1st edition, which doesn't appear to have that on page 149.

That explains a lot!  

Was told the updated edition was mostly about PS3, which I don't have, but apparently there was more added, like the explanation of Engine Error ...

The 2nd edition has 25% more information than does the 1st edition. It went from 168 pages to 215.

Are you planning to do another update to cover DCS 4.31 when it's released?

The next edition will cover 4.30. If 4.31 adds any new features or functions, I'll do an update.

Dumb question Barry, since you should know now what's in 4.31, wouldn't it be prudent to just add it now?