Heap corruption connected to the usage of DX8Render ReleaseVertexBuffer() eventually leads to the game crashing. This current patch skips releasing the vertex buffer, which hurts game performance, but keeps the game running longer and with fewer graphical anomalies. Once I learn more about the cause, there will be an improved patch that wont affect game performance. Installing The Patch A) Backup your PotC MODULES\battle_interface.dll (move it to the desktop or add ".backup" to it's filename) B) Download and decompress EU_BI_bypassFDC0.7z into the MODULES folder [EDIT] The previous workaround, registry modification to enhance the fault tolerant heap, was removed. [EDIT] Improved heap corruption patch, for US/EU and Build 14.