Crash at startup with no crash log

Question

I had X-Plane working perfectly back in February then got bust iRL and took a break. When I try to load it now I get a silent crash to desktop with a crash log which shows no indication of why. I ran the installer to update things with no improvement. Crash log below. I can do a complete reinstall but would rather like to avoid it if possible as I have a lot of extra scenery installed. And yes, it was working back in February with the exact same add-ons, scenery, etc installed.

log.txt for X-Plane 11.21r2 (build 112101 64-bit)
 compiled on May 21 2018 15:50:43
X-Plane started on Fri Jun  8 12:49:14 2018

This log file is generated automatically by Laminar Research applications and contains diagnostics about your graphics hardware, installation, and any error conditions.
If you need to contact tech support or file a bug, please send us this file. NOTE: this file is rewritten every time you start ANY of your X-System applications.

Windows 10.0 (build 17134/2)
This is a 64-bit version of Windows.
CPU type: 8664
Physical Memory (total for computer): 34317443072
Maximum Virtual Memory (for X-Plane only): 140737488224256
CPU 0: Intel(R) Core(TM) i7-7820HK CPU @ 2.90GHz  Speed (mhz): 2904
CPU 0: Intel(R) Core(TM) i7-7820HK CPU @ 2.90GHz  Speed (mhz): 2904
CPU 0: Intel(R) Core(TM) i7-7820HK CPU @ 2.90GHz  Speed (mhz): 2904
CPU 0: Intel(R) Core(TM) i7-7820HK CPU @ 2.90GHz  Speed (mhz): 2904
CPU 0: Intel(R) Core(TM) i7-7820HK CPU @ 2.90GHz  Speed (mhz): 2904
CPU 0: Intel(R) Core(TM) i7-7820HK CPU @ 2.90GHz  Speed (mhz): 2904
CPU 0: Intel(R) Core(TM) i7-7820HK CPU @ 2.90GHz  Speed (mhz): 2904
CPU 0: Intel(R) Core(TM) i7-7820HK CPU @ 2.90GHz  Speed (mhz): 2904

X-System folder:'M:\X-Plane 11/', case sensitive=0

--=={This application has crashed!}==--

Answer 1

If the automatic crash reporter comes up be sure to fill it out & send it in.

A good place to look is at the preferences. Move the preferences folder (found in the Output folder) to the desktop, then restart X‑Plane and default preferences will be restored. If the default preferences do not fix your problem, you can simply replace them with the folder you moved to the desktop and restore your personalized settings.

The final common culprit is third party add ons, such as scenery and plugins. Try moving the Custom Scenery folder and plugins folder (found in the Resources folder) to the desktop, then restart X-Plane.