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fatal error: unhandled exception (During Bump Maps)
I am applying quite a few bump maps in my current project (regional map) and get the fatal error about 1 in 6-8 times. The image is kind of large (~86 MB) but most times works fine.

System is Windows 10 Enterprise 64 bit
Gimp 2.10.22. 
25% memory usage with 64 GB Physical ram installed. 
Processor Intel® Core™ i7-8850H CPU @ 2.60GHz, 2592 Mhz, 6 Core(s), 12 Logical Processor(s)
Hello eepjr24

In order to diagnostic the memory issue:
  1. restart Gimp before each very big bumpmapping
  2. make a clean reboot as you wrote yourself
  3. Gimp menu Windows > Dockable Dialogs > Dashboard as suggested by rich2005
  4. Gimp menu Windows > Dockable Dialogs > Error Console
How to run Gimp for debugging purpose?

Right-click Windows Start > contextually menu Windows Powershell.

Add or not the following Command Line Arguments after the Gimp executable as optional parameters:
. "C:\Program Files\GIMP 2\bin\gimp-2.10.exe" --console-messages --stack-trace-mode=always --no-shm

  ^ Don't forget the Powershell dot operator at the very beginning of the command.  Idea

More precisely, use or not, --step-by-step--, the following Command Line Arguments:
  • --console-messages: Do not popup dialog boxes on errors or warnings. Print the messages on the console instead.
  • --stack-trace-mode=always: Debug in case of a crash
  • --no-shm: Do not use shared memory between GIMP and plugins
  • --no-cpu-accel: Do not use special CPU acceleration functions. Useful for finding or disabling buggy accelerated hardware or functions.
Powershell starts a new black console that will display a lot of GECL warnings even when it works.
At the end of session, after you quit Gimp, you are invited to close the black console:
(Type any character to close this window)

Before entering any character, save valuable warning messages by Ctrl+C to help to diagnostic the debugging session.
Paste them by Ctrl+V in this forum.

For example even if it is unrelated with the subject:
(gimp-2.10.exe:9852): GLib-GIO-WARNING **: 12:50:25.480: Unexpectedly, UWP app `Evernote.Evernote_10.22.3.0_x86__q4d96b2w5wcc2'
(AUMId `Evernote.Evernote_q4d96b2w5wcc2!Evernote') supports 1 extensions but has no verbs
GIMP-Error: Unable to run plug-in "liblqr-1-0.dll"

Failed to execute child process (Exec format error)


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