To fix this, edit your save file:
1. Check your "professions" tag.
Performing you can have 0 for rancher and 2 or 3 for Coopmaster or Shepherd), or 1 for tiller and 4 or 5 for Artisan or Agriculturalist.
The other skills are similar but they count by multiples of 6.
If you have any conflicting professions either for the level 5 (0 and 1) or level 10 professions (2,3,4,5), delete the conflict.
Then load the game and play.
There's also a newLevels tag that you should delete after setting your professions to a compatible set that matches your experience points.