Huge amount of lines and points that has to be rendered in zoom-level 9 -11 this is weakness that complicate usage of vector maps. It's our task for the next year to prepare simplified vector maps for mentioned zoom-levels.Sometimes also some lines are missing for zoom-level 11 http://forum.locusmap.eu/index.php?topic=4263.msg33635#msg33635
New vector maps for Japan have the same version number 2014-11-10. For this reason you can download them for free. So open store > find the problematic japan map and choose "Remove" after that start downloading again.
New vector maps for Japan have the same version number 2014-11-10. For this reason you can download them for free. So open store > find the problematic japan map and choose "Remove" after that start downloading again.