[v2.1.1] - Fix disabled input box when wrong yomi.
Hey it seems like this script activate itself everytime whether you’re wrong or not I guess it’s due to one of the recent WK update
Since Mistake Delay is built into Double-Check, I’m not planning to maintain this one. So, I’d recommend switching to Double-Check. If you do switch, be sure to look at the options near the top of the script to configure Mistake Delay how you want it. There may also be a settings menu soon, though no guarantees.
Hi @rfindley,
I realised I was still using the Mistake Delay in addition to the Double-Check delay script.
Is it feasible for the Double-Check to detect ‘Mistake Delay’ being active, and to suggest the user to delete the unsupported one?
Also, maybe you can this obsolescence notice in the 1st post of this thread? Thanks.
Hi, how do you remove this script? I added it in error and now every time I open my reviews it says “Wanikani Mistake Delay script is not working.”
This error message is now a permanent feature of my life as even if you uninstall the script it still does it.
Which browser are you using, and how did you install the script?
If you installed it in a script host plug-in like TamperMonkey, just open TamperMonkey and delete the script.
If you (also?) installed it directly into your browser, you’ll need to open up your browser’s “extensions” page from the browser menu and remove it that way.
Firefox (latest version) and Tampermonkey. Tried all that already, even with the script totally removed I get the error message.
Sounds like you may have installed it also as a browser extension, which would happen if you tried to install it before installing TamperMonkey.
Try temporarily disabling TamperMonkey itself to confirm whether the problem goes away. If not, the script is installed as a browser extension.
Also, something to consider: if I (or some other scripter) happened to copy/paste a section of code from Mistake Delay and forgot to change the text message, it’s theoretically possible that it’s another script that has the problem but the script is misreporting which script it is. The chances are small, but I try to think of all possibilities…
Sorry to drag this on but it’s definitely not installed as an add-on and even if I completely remove Tampermonkey the error message doesn’t go away. It’s not in the code for any other scripts either.
Ultimately it’s just another click before I start my reviews so I’m not too worried about it, it’s just a very odd bug I can’t seem to get rid of.
Do you have any other script handler installed?
Nope! I have some script blockers for privacy, would that be it?
There are only two places the script could be: In a script handler (TamperMonkey, ViolentMonkey, GreaseMonkey, etc) or installed as a browser plug-in/extension. The script can’t possibly run without being in one of those places.
Could you post some screen-captures of what you’re seeing, and maybe your TamperMonkey script list, and Firefox plugins and extensions pages? That make give us a clue that we are missing.
I double checked when making some screengrabs - I had greasemonkey installed, which I disabled and it fixed the issue. Thanks!
Am I alone getting this since about yesterday? Chrome browser, if anything.

I suspect this broke for the same reason as Double-Check: A change to Wanikani this morning.
Since Mistake Delay is now integrated into Double-Check, I am no longer supporting the standalone version of Mistake Delay. I recommend switching to Double-Check, and you can disable all of the other features if you don’t want to use them.
Oh, thank you for quick response and detailed explanation of the case!
Will switch there then.
Bummer. This was my favorite script, and I’ve built up typing habits that make using WK without it nearly impossible. I’ll give double-check a shot and do my best not to cheat–I’ve made it this far.
Also, thank you for making and maintaining these scripts!
how do I turn this option off???
First, I recommend switching to the [Double-Check] script, since Mistake Delay is no longer supported as a standalone script. Double-Check contains Mistake Delay and is still supported. And it has a nice setup window to configure it. You can disable any of Double-Check’s features that you don’t want to use.
But if you really want to continue using this version, open the script in TamperMonkey and edit the settings at the top of the script. Change delay_multiple and delay_slightly_off to 0 instead of 1.

Thank you for the quick response my G!