All my Masternodes were showing up with the Safe mode error last night on the current version (0.11.0.11). I started with -reindex and remove peers.dat and did a grep on them all. Everything was fine for around 12 hours but they're now showing up with the same error again. Is this a known issue? Just wondering whether it's worth reindexing again or just wait for 0.11.0.12.
No need to wait until 11.0.12.
If you have updated both remote and local and (deleted peers.dat and reindex when you start) you should be fine.
When I did that yesterday all of my masternodes have been up and stable. 28 hours and counting.