An unknown plugin has bypassed XPLM when calling SDK functions. This is a plugin bug.

Let it be known for those who dont know, There has being an issue with plugins making an illegal call, Laminar has shut the door on this, so your sim will likely crash, It is a plugin issue, most developers are aware and on the case to fix them.

Old Xpuipc -Has a lot of issues anyway shouldnt be using it

xPilot

Live traffic

Stable approach - old ver 1.4.0 beta reported

Active sky for some

SAM if your silly enough to still be using it wont get fixed

Zoal Honeycomb reported

World traffic

Thats all i see so far should be bug fixes soon

X-ATC-Chatter is also affected.

LiveTraffic still works though.

Btw: This only affects C based plugins that run separate threads outside of XP's main thread, so Lua and Python scripts are still fine.

Hi, this just happened to me. In my case, it's the AutoGate plugin that's causing xplane to close.

fstramp also doesnt work and no fix will be incoming 

Edited April 2Apr 2 by fluffyflops

On 3/13/2026 at 12:42 PM, Bjoern said:

LiveTraffic still works though.

Btw: This only affects C based plugins that run separate threads outside of XP's main thread, so Lua and Python scripts are still fine.

theres an update for live traffic as well as activesky

I had problems with Active Sky. Updated to current version fixed that.  No problems with X Chatter. 

Jim

CYWG