Error handling for centering has been improved a bit starting in 2.5.2.4. It now uses the new-ish sequence level notifications area (exclamation icon in the targets list) to convey more specifics about what happened during centering. In this case it would have logged a user facing error saying:
Slew failed! InvalidOperation Slew Requires Meridian Flip!
Many other areas were also updated to improve the quality of feedback.