Because the original developer’s website is long defunct, you will need to hunt for the patch on community archives like The Patches Scrolls , ModDB , or the Castle Strike Revival Discord server.
Patch 1.1 attempted to fix stability but introduced new bugs related to resource gathering. It wasn't until the release of (and its subsequent hotfix 1.2.21 ) that the game became the hidden gem it is known as today. Castle Strike Patch 1.2 21