Running on 64 bit Windows with 16 GB RAM 
Version: v1.15.7 (Stable)10/23/2021 8:30:53 PM: Critical error occurred
System.NullReferenceException: Object reference not set to an instance of an object.
   at XSkills.XSkillsPlayerBehavior.OnGameTick(Single deltaTime)
   at Vintagestory.API.Common.Entities.Entity.OnGameTick(Single dt)
   at Vintagestory.API.Common.EntityAgent.OnGameTick(Single dt)
   at Vintagestory.API.Common.EntityPlayer.OnGameTick(Single dt)
   at Vintagestory.Client.NoObf.ClientSystemEntities.OnGameTick(Single dt)
   at Vintagestory.Common.EventManager.TriggerGameTick(Int64 ellapsedMilliseconds, IWorldAccessor world)
   at Vintagestory.Client.NoObf.ClientMain.MainRenderLoop(Single dt)
   at Vintagestory.Client.NoObf.ClientMain.MainGameLoop(Single deltaTime)
   at _gt983m53spH3zIRFvTrVgBj5MUb._m2KVBUzhniiatiiNT9yOoXoOOvL(Single )
   at _2hFm1B1DwOk1Z7yF6DtBdLeBFKaA._5soGXezAcR5oyhhq2pmELCuEn2M(Single )
   at _2hFm1B1DwOk1Z7yF6DtBdLeBFKaA._ZzmaNk5IGbtvQ61ssCzCszyBw2n(Single )
   at Vintagestory.Client.NoObf.ClientPlatformWindows.window_RenderFrame(Object sender, FrameEventArgs e)
   at System.EventHandler`1.Invoke(Object sender, TEventArgs e)
   at OpenTK.GameWindow.RaiseRenderFrame(Double elapsed, Double& timestamp)
   at OpenTK.GameWindow.DispatchRenderFrame()
   at OpenTK.GameWindow.Run(Double updates_per_second, Double frames_per_second)
   at _LiN8p156auXcqjjOW5aVAZ0QkUc._fwMbTl3XHB2eqbxoLfc3FpMIE00(_CFodeVozKjT5VhVV66Wv4Bd7r3c , String[] )
   at _qBF2AKwdIhCkNZsjxBA24g20vlH._fwMbTl3XHB2eqbxoLfc3FpMIE00(ThreadStart )
-------------------------------

Event Log entries containing Vintagestory.exe, the latest 3
==================================
{ TimeGenerated = 10/23/2021 2:54:44 PM, Site = , Source = Windows Error Reporting, Message = Fault bucket 1787910656348641149, type 4
Event Name: APPCRASH
Response: Not available
Cab Id: 0

Problem signature:
P1: Vintagestory.exe
P2: 1.15.7.0
P3: 6167103b
P4: KERNELBASE.dll
P5: 10.0.19041.1202
P6: c9db1934
P7: c0020001
P8: 0000000000034f99
P9: 
P10: 

Attached files:
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER3F71.tmp.mdmp
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER4127.tmp.WERInternalMetadata.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER4147.tmp.xml
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER4145.tmp.csv
\\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WER4166.tmp.txt

These files may be available here:
\\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_Vintagestory.exe_adcab0df8fe39fcdfed093ad446bf3e7bcf282b_ef62ac57_2c110b08-4120-4683-b727-942e483186cc

Analysis symbol: 
Rechecking for solution: 0
Report Id: 0b033103-f25a-44bb-9ee6-2d87e23ee599
Report Status: 268566528
Hashed bucket: 1d20593dfc7c21b6b8cfef44e9cbd77d
Cab Guid: 0 }
--------------
{ TimeGenerated = 10/23/2021 2:54:42 PM, Site = , Source = Application Error, Message = Faulting application name: Vintagestory.exe, version: 1.15.7.0, time stamp: 0x6167103b
Faulting module name: KERNELBASE.dll, version: 10.0.19041.1202, time stamp: 0xc9db1934
Exception code: 0xc0020001
Fault offset: 0x0000000000034f99
Faulting process id: 0x3638
Faulting application start time: 0x01d7c847b3a1b96d
Faulting application path: C:\Users\beauf\AppData\Roaming\Vintagestory\Vintagestory.exe
Faulting module path: C:\Windows\System32\KERNELBASE.dll
Report Id: 0b033103-f25a-44bb-9ee6-2d87e23ee599
Faulting package full name: 
Faulting package-relative application ID:  }
--------------
{ TimeGenerated = 10/23/2021 2:54:41 PM, Site = , Source = .NET Runtime, Message = Application: Vintagestory.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: exception code c0020001, exception address 00007FFB73744F99
Stack:
 }

I keep getting the following crash report as I'm trying to setup a MP server... first time this is ever happened. I've tried reinstalling and only running xskills and xlib and I keep getting this crash report.

IMPROVED POULTICE MOD

BY DYTHANOS

Welcome to my first ever published mod! [be gentle] This mod serves to add much needed features to both the single player and multiplayer experience by tweaking the current poultice item and adding a class that uses them more effectively.

Poultices in this mod will now be usable on other entities allowing you to heal wounded animals and other players. (or even drifters if you are feeling cheeky!) I have also lengthened the time it takes to apply poultices (much less so for linen poultices, which are now called bandages) and improved their basic healing amounts. For example: Reed Horsetail Poultices now heal 3hp but take 1.75 seconds to apply and a Linen Honey Sulfur Bandage heals 8hp and takes 1 sec to apply. To heal yourself with this mod, press and hold the RMB while not targeting another entity. To use on another entity, you must be near that entity and press and hold the RMB. For use on another entity, you do not have to keep the reticle on the target, but you must stay relatively close by or you will not complete the healing.

This mod also adds the Medicine Man class, a village wise man that communes with nature and is highly effective at using poultices on themselves or others. He lacks the youth to fight in melee and is too set in his ways to learn new technologies, but even with these weaknesses, they will be a welcome addition to any village.

If you experience any bugs with this mod, please let me know below.

improvedpoulticemod_v1.0.0.zip

I have this on my server, but /waypoint functions are still available.

I will be trying this out... I've been dying for a PVP server!

The new Barn in the Village of Wyndridge!

Hey, you mention an xlib.xml file in with the mod zip, but I could t find one in either of the zip folders.