RJ TextEd

Since sometime ago (before the latest betas) Terminal window icon has been incorrect:
This is the icon of a script (of SCSS processor) I run as a tool; it is also present in "Code" section of my User toolbar. It's not the first icon in the Tools dropdown menu, but the first icon of a tool that is run as DOS Command.

Are you using your own modified image list? If so - make sure it contains the same number of images as the original image list.

Do you mean *.bin file with icons for the toolbars, modified with ImageListEditor.exe? No, I don't, I like PureFlat set