settings page link miss-linked

If you receive this error on the Site info page, the link to the settings page is gonna be wrong:

Adv CSS/JS Agg - Theme Hook: Theme hook is not in the correct place.
On the performance page clear the cache. If this is still an issue open up a bug on the advagg issue queue and be sure to include the "Hook Theme Info" output from the Advanced CSS/JS aggregation settings page.

It points to http://MYWEBSITE.com/SUBFOLDER/admin/config/advagg but it doesn't exist.

Same here:

Adv CSS/JS Agg - Asynchronous Mode Set to FALSE.
Check to see if you have fast 404s, if so create an exception for this module. The readme file explains what needs to be changed. You can try flushing the menu cache as well. If you are still having issues you can go to the AdvAgg information tab and select Asynchronous debug info. If creating an issue on d.o be sure to include this information .