This information may be helpful for such problems: http://forum.strongholdkingdoms.com/viewtopic.php?f=97&t=9367

Fix/Workaround

1. Please log out of the game and close it fully.
2. Locate and delete the appropriate “VillageDataxxx.dat” file corresponding to the world you are playing on.  xxx refers to the World code. A full list of world codes is at the bottom of the page. e.g. English World 1 = VillageData100.dat

These files are located in the following folders (Hidden files/folders will need to be visible *):

Windows XP

C:\Documents and Settings\User\Application Data\Firefly Studios\Stronghold Kingdoms

Windows Vista/7/8/10

C:\Users\[USERNAME]\AppData (hidden folder)\Roaming\Firefly Studios\Stronghold Kingdoms

If SHK was installed for All Users:

C:\User\Default\AppData\Roaming\Firefly Studios\Stronghold Kingdoms

* To make Hidden Files and Folders visible

Windows XP

Open My Computer, click on Tools in the top menu open Folder Options and within the View tab you will see Hidden files and folders, select "Show hidden files and folders".

Windows Vista/7/8/10

From the Start Menu Choose Computer/C: (or letter your drive is called) Then on the menu bar click on Organise/Folders And Search Options/View And within this view tab you will see Hidden Files and Folders, select "Show Hidden Files And Folders"

World Codes:

Special thanks to Voltair!