Won't activate in wp 3.9

Sounds like a plugin/theme conflict.

To test for a theme conflict:

1. Activate default Twenty Ten, Eleven, Twelve, or Thirteen theme
2. Check to see if the issue still occurs
3. If the issue does not occur after having activated the default “Twenty” theme, your theme is causing a conflict with landing pages.

To test for a plugin conflict:

1. Deactivate ALL plugins
2. Activate Landing Pages
3. Check to see if the issue occurs

If the issue does not occur, one (or more) of your plugins is causing a conflict with Landing Pages.

To determine which plugin(s) is causing the conflict, follow these steps:

1. Activate each plugin one by one
2. Check to see if the issue occurs after each plugin is activated

Tried changing theme and deactivating all plugins. doesn’t work. Landing pages won’t activate.

tried it on another WP site running 3.8.3 – didn’t work there either – also disabled other plugins and changed theme to default.

these sites are hosted on Hostgator. Maybe that’s the issue…

Please install the health check plugin and verify your site runs on PHP version 5.3 or greater. https://www.ads-software.com/plugins/health-check/

If it is not. You need to contact your hosting provider for them to upgrade. PHP 5.3 came out in 2010

That’s it. the default php at hostgator is 5.2

when I changed to 5.3 the plugin activates.

thank you