When I select “Export, Download CSV” and click “To All” I get a browser prompt “Are you sure you want to Export, Download CSV?” I click OK and the page reloads and nothing happens.
Could you try deactivating Premier and then export. Clear your cache as well.
Also we need besides Plug-ins, the versions of WordPress and PHP? We request you go to your SLP plugin menu , click on Info and environment and take a screen shot if you could please.
Users that have installed the Power add for WordPress may have issues importing and exporting locations. After a week of tracking down this issue, which only happens on SOME WordPress sites, we have found that the WordPress user settings for administrators can be corrupted. This causes the admin interface to not load properly. That causes the JavaScript for the Power add on (and likely lots of other plugins, not just ours) to not be loaded.