Originally Posted by john caldwell
Yes have checked that box/ North up, always has been!
I'm thinking the program has been corrupted and should probably re-load it afresh.
What you are describing is typical for "Course Up Mode".
It's not just a question to check the box in the Options->Display tabs.
You can change the setting from the right-click menu as well.
Right-click on the chart and check the displayed menu.
If you find the sentence "Course Up Mode", you are in the "North Up Mode".
If you find the sentence "North Up Mode", you are in the "Course Up Mode", and should click the "North Up Mode" entry in the menu.