GIMP Version: 2.8.10
Operating System: Mac OS
GIMP Experience: Basic Level

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I've recently had a problem with the undo feature. I'm not using any complex scripts/plugins when I try to undo - just the usual. When I go to history, even that shows nothing. Anyone else experiencing or have experienced this in the past. My minimum/maximum undo levels are set to their respective defaults.

Yes, I've had problems with it before. Not always, but sometimes still do. I'll hit undo a few times, then it won't let me undo any further. Very frustrating sometimes.

This can happen when a script crashes (*). Here is a work around to recover the undo stack, using the Python console(**).

• Start the python console, from any image: Filters>Python-fu-console
• Copy the following line exactly:
  
  Code: Select all

  for img in gimp.image_list(): img.undo_thaw()

• Strike [enter] twice: after first it will display "...", after second it will display "True" or "False", once for each image.
• Close the python console

Warning, this re-enables the undo stack on all images, do not execute if scripts are running.

(*) scripts routinely freeze the undo stack, because it's not useful to allow undo/redo on operations performed by the script, while saving the data for undo/redo takes time and memory. OF course the undo stack has to be "thawed" on exit, which is what happens when the script terminates normally but it can crash before it reaches that instruction.

(**) I assume someone will come up with the equivalent rain dance for the script-fu console, for the Python-phobic ones

Thank you Warrior for your response - you know what they say, "...misery loves company"; and ofnuts, thank you for a solution!

I too have experienced the same problem sometimes.

ofnuts and Carlos just wanted to confirm that it works. ofnuts I did as you suggested and haven't had a problem even with running scripts. Thank you!

sometimes (not too much) Ctl+Z is not working so I go into menu I click Edit/undo and it is working!