List layout instead of Blog layout & Duplicated URLs
This known as "Duplicated URLs" issue and happens because there exists 2 links to the content/category in your site - 1 with category list layout and the other with blog layout.
At the start, AceSEF find the link to category with one layout (mostly blog). So the appropriate URL is created and works fine...
... until another link is detected (mostly generated by 3rd party modules), that leads to the same category, but with different layout setting. Then another records is stored to database and possibly it automatically gets preference over the prior link stored.
There is a few ways to solve this issue:
1. After the second links is generated you can set as "Used" in SEF URLs to choose, what layout/URL you want to use for given SEF URL. (in case you want to use just 1 layout/URL always); If you would like to use both, you will need to change one of the SEF links to something else, so the 2 are not conflicting.
2. You can also prevent such "duplicates" creating by changing the "Record duplicated URLs" option to No in AceSEF configuration or proper extension parameters. Then only 1 version of SEF URL will be stored - and in case it is not the one you want - you will need to update it manually.
3. You can also prevent such "duplicates" creating by changing the "Numeral duplicated URLs" option to Yes in AceSEF configuration or proper extension parameters. Then an unique SEF URL will be created for each URL.
4. Another option would be to update your site in a way, that there do not exist links with both types of layout/URL. Then no duplicate URL can occur.