When i try to start the mod from the workshop browser , it loads , but then i get this error message.

POSTAL 2 Build Jun 13 2015 13:27:37

OS: Windows NT 6.2 (Build: 9200)
CPU: AuthenticAMD Unknown processor @ 1500 MHz with 4095MB RAM
Video: NVIDIA GeForce GT 620 (5306)
Level: WS-AVeryPostalChristmas4 - A Very Postal Christmas

Assertion failed: &Mips(MipLevel).DataArray(0) [File:UnTex.cpp] [Line: 1178]

History: UTexture::ConvertDXT <- FD3DTexture::Cache <- FD3DRenderInterface::CacheTexture <- FD3DRenderInterface::HandleCombinedMaterial <- FD3DRenderInterface::SetSimpleMaterial <- FD3DRenderInterface::SetMaterial <- FBspDrawList::Render <- RenderLevel <- FLevelSceneNode::Render <- FCameraSceneNode::Render <- UGameEngine::Draw <- UWindowsViewport::Repaint <- UWindowsClient::Tick <- ClientTick <- UGameEngine::Tick <- UpdateWorld <- MainLoop

How did you try to start WS-AVeryPostalChristmas4 ? The way you start it is you go into the Postal 2 main menu and start new game / workshop... / then select WS-AVeryPostalChristmas in the list. This download is not in the mod section tab.
But if you did try to start it the way I just explained then I don't know what the problem is. Maybe you should post this problem in the main Postal 2 support discussion area : http://psteamcommunity.yuanyoumao.com/app/223470/discussions/1/
'cos I don't know the answer to that one

I got it working!
i just deleted Postal2.ini from System folder and launched the game and it worked.

Good to hear ! Thanks for the info on how to fix it !

I have found some transition bugs in the cidertown level and will be fixing them. Please let me know where you found a transition bug so that i can fix it. thanks

When police get you, you will be teleported to Police Station in Paradise

Question: I know this mod has no map, is it even possible to put one in conisdering this is just a mod? If not, is there a way to replace the map with a list of errands?

As for bugs:

In the cemetary, there is an odd skelleton that is floating around without any animation. I don't know if this is intentional or not.

Postal Dude's bathroom door is on backwards.

There is a sniper rifle in one of the trailers which is currently inaccessible because it's placed in the wall.

I took screenshots of these which you can find in my profile.

I'm making a new map for this that noone has seen before and not even I have seen it yet ! LOL cos im jus starting right now :)

There's a transitioning bug on the way to uptown/downtown from Dave's complex. Picture is in my screenshots for postal 2.

Probably not really relevant now, but when you unlock the church, there is still no way of getting inside.

Edit 1:Walking up to the lighthouse instantly kills you. There is a house with a ladder on it and a cinematic plays every time you walk to the door, meaning you can't actually go inside.

Edit 2:You can't go to cidertown because of a broken transition, Though I think you know this already.

if you want to get into the church you have to take the secret entrance that is underneath the church. You have to go by the lower part(drop down where the tiny island is) where the railway tracks are and go into a tunnel where the bridge is out and jump over the broken bridge dont touch the water or u freeze to death !

u can actually get into cidertown through 1 transition that works and its the only way out and in of cidertown atm !

is this mod finished ?

no Im still working on it

Hi!
I have some problems with the police. (No, not the usual.)
When I'm captured by the police, they bring me to a different place than the one I saw in the non-Steam version: Postal 2's original police station. And when I make myself free and leave this building, the game puts me in the normal game...

jus dont get cuaght