From DTG. "ERROR: Failed to create vertex buffer (D3DERR_INVALIDCALL)
File: DxCommon\cHcVertexManagerDx.cpp
LINE:1234

This error message occurs when something 3D is trying to be created in Train
card. If you have updated your graphics card driver and you are now getting this error when you wasn’t previously please revert to the earlier driver.

4. Reduce your graphics settings in the Train

event that this does not address the issue please contact our support team directly.

ERROR: Failed to create vertex buffer (D3DERR_INVALIDCALL)
File: DxCommon\cHcVertexManagerDx.cpp
LINE:1234[/b steps as for ERROR: Failed to create vertex buffer (D3DERR_INVALIDCALL).

: DDR3 SDRAM
Operating System: Windows 10
Think that's enough info :)
Secondly:
When building scenarios I eventually get the save to dump file error or failed to create vertex buffer error and when I try
reoccurring when I have been building scenarios for prolonged periods of time e.g. 2 hours. Numerous times in the past I have cleared the cache and verified integrity of files to solve these errors before but

UPDATE , ok so ive now had a error code =ERROR: Failed to create vertex buffer (D3DERR_INVALIDCALL)
File: DxCommon\cHcVertexManagerDx.cpp
LINE:1234

Which according to support page say this
This
error message occurs when something 3D is trying to be created in Train Simulator. The main cause of this issue is your graphics card has run out of memory and cannot create the necessary model or scenery

. https://dovetailgames.freshdesk.com/support/solutions/articles/80000896089-common-issues-train-simulator-classic#:~:text=in%20Train%20Simulator-,Error%3A%20Failed%20to%20create%20vertex%20buffer%20(D3DERR_INVALIDCALL),the%20necessary%20model%20or%20scenery.
A follow-up from Nvidia about the Vertex Buffer error they have referred me to DTG with this link. Scroll down to the Vertex Buffer error and what they recommend to do

Glenn
So this only happens in the editor then that could explain the 'vertex buffer error". You may be trying to create a vertex buffer object that cannot exist under the current coding of TS 2015
prompt "disable vertex buffer object = 1" then run the editor to see if the same error occurred. Not sure on the spacing so see what works.

I was under the impression that this was occurring when you

The Gamer Boy is correct - this is a "Temporary error" usually involving a single (dynamic) buffer and his/her solution should fix it. It just means a particular video buffer can't be created due
the serach box ype in reliability history. When displayed, clock on the error icon white cross on red circular background when the vertex buffer error occurred - what errors are displayed in the box

problem can arise if the gpu bottlenecks the cpu or vice versa, and then you get the error 'failed to map the vertex buffer . . . '. It can be caused by quite a few things including too high settings in the
install without any add ons?

From another post of mine:
Simply, Vertex buffers are used to optimise or share processing by both the CPU and the GPU. Vertex Buffers provide us with a mechanism of being

data. This gives us a good image at reasonable frame rates.

The problem can arise if the gpu bottlenecks the cpu or vice versa, and then you get the error 'failed to map the vertex buffer . . . '. It
try a clean install without any add ons? Is that Windows 8.1 Update 1 as that fixed some issues?

From another post of mine:
Simply, Vertex buffers are used to optimise or share processing by both the

After 10 or more crashes to desktop. I keep getting this error.

Error : Failed to create buffer ( E,OUTOFMEMORY)
File : DxCommon\cHcVertexManagerDx.cpp
Line : 1242

Well I don't know how I can be
.

Railworks Memory Usage : 752,336 kb what a hog !.

All i'm doing at the moment is creating my own rail and using the gradient tool to raise the level of the track. I've gone threw over 10 crashes to desktop