That would probably be an issue with MOM. They are aware there are some issues with pillars it is on their page.

This has been a persisting problem even before SH was out. Some parts of my city's metro tracks has pillars wheres some don't. lol..

Hey there again! Just wanna check, is the missing metro pillar error message linked to MOM? I've been trying to build elevated metro tracks, but somehow, no matter what options i choose, pillars would not appear. It looks as though my tracks are levitating.

In any case, thank you for helping me out! Really appreciate it! :)

And sorry I was not of more assistance, I happen to be in the middle of two other saved games of others and just got done with the last one :)

Thank you for taking the time and effort to figure it out and I definitely will :)