I got the same problem now with the latest game-patch

me to

same here any solution?

Just exit game turn off Radious Campaign Features Mod then reload game... take all army/navy out of forced march end turn .... then save game. Exit game reload Radious Campaign Features Mod restart game problem solved. Worked for me and I know this reply is to an old thread but people still find themselves visiting when looking for a solution. :)

I've tried an failed that before i think, it said you needed the radious mod to play this game but that was a long time ago, ill give it one more shot!

Btw guys the fix for this issue is to get another mod called something like "back force"... look in the mods for "forced march" and yourll see it, it simply re-adds forced march to the game, keep radius activated and use that to "remove" forced-march from the offending general, then save, disable mod for the forced march, and load saved game.
Had this issue for about 5 minutes before i had it sorted :)