Having same issue, I tried all the usual fixes
Delete HK_CURRENT_USER/Macromida/FlashPlayer
Delete Appdata/Roaming/Macromida/<the one with rotmg sol>
Restarted computer
Uninstalled flash player and reinstalled
Deleted flash history/local data in cfg manager
Still no luck.
same any idea.. mine stopped after a 10 min dc and then i closed my client now only loading realm.com and logged back in but still no luck...