Lemmings Forums

NeoLemmix => Community Edition => Editor Bugs & Suggestions => Topic started by: Flopsy on September 05, 2026, 11:13:28 PM

Title: [✓][BUG][ED] Error when clicking Ruler to access skill mask guides
Post by: Flopsy on September 05, 2026, 11:13:28 PM
(https://i.postimg.cc/vmdXzvfM/nl-editor-error.png)

So when I open the editor and click Rulers for the first time. This error pops up, I have to click ignore twice to clear it.

The first 9 slots in the editor piece display show the skill masks up to the glider one and the remaining 11 slots still shows terrain pieces (or whatever you were on prior to clicking Rulers).

Clearing the error will cause the ruler pieces to display in all slots again but with 2 pieces not displaying correctly.

The Ruler pieces still display but the vertical line one is blank for me and clicking this re-produces the error message again.
The horizontal line one is also not displaying correctly and is a bunch of dots, this also produces the error if clicked on.

(https://i.postimg.cc/DzMrNdbp/nl-editor-bug-2.png)
Title: Re: [BUG][ED] Error when clicking Ruler to access skill mask guides
Post by: chroda on September 06, 2026, 08:45:22 AM
Hi Flopsy,
+1
A temporary workaround until the issue is fixed...
I've noticed that by replacing the native "rulers" folder with the one from SuperLemmix, it works perfectly for me.
Title: Re: [BUG][ED] Error when clicking Ruler to access skill mask guides
Post by: WillLem on September 06, 2026, 08:22:17 PM
Yeah, for some reason the rulers all have to have some alpha value (transparent/semitransparent pixels) in the .png image. I still haven't fathomed this one.

The attached rulers zip should fix all of the errors reported in the OP. Let me know if you're still seeing terrain/object/whatever pieces when you switch to rulers though, that definitely shouldn't be happening and I've been unable to reproduce the behaviour.

Title: Re: [+][BUG][ED] Error when clicking Ruler to access skill mask guides
Post by: WillLem on September 06, 2026, 09:04:34 PM
OK, figured it out.

The rulers were being added as 24bit RGB images with no alpha channel. The actual fix is to normalize them to 32bit ARGB during loading. I'll release an Editor hotfix shortly.

Fixed in NLEditor commit bafe87c.