When you install the Self-Help Guide module, it's necessary to perform a revert, to apply icon values to the created taxonomy media type terms.
- Go to the Structure menu in the Administrator Toolbar and select Features.
- In the left column, select UMN Common Features.
- In the right column, select UMN Self Help Guides TOC.
- In the right column, click on any existing checkbox (for example "field instances").
- Scroll to the bottom of the page and click Revert components.