Image Glass 10.x uses wrong extension icon folder path

Windows OS version

W10 22H2

ImageGlass version

10.0.6.906

ImageGlass release

Classic

1️⃣ Steps to reproduce

Just install Image Glass by default.
Register it as default image viewer.

2️⃣ Actual behavior

Starting from v10.x, Image Glass is supposed to use _ext_icons folder for the icons.
But it seems that it still keeps old behavior, using old folder Ext-Icons from legacy versions.

If I only use _ext_icons folder by default, the icon files aren't properly registered and all image files are shown without linked icons.

If I duplicate that folder and rename it to Ext-Icons, re-register Image Glass as default image viewer again, the issue is resolved, icons are showing properly as normal.

3️⃣ Expected behavior

Image Glass should recognize the folder _ext_icons as icon folder path, instead of Ext-Icons (legacy behavior)

4️⃣ Screenshots / Video / Sample image file

No response

5️⃣ Additional context

No response

Start by tracing the default installation and image-file association flow that registers the extension icons, comparing the expected _ext_icons path with the legacy Ext-Icons path. Confirm the fix by installing ImageGlass with the default settings, registering it as the default image viewer, and verifying that image files display their linked icons without duplicating the folder.