Can't activate this plugin

Hi,

This is weird. This error only comes when you try to activate both the versions of Ultimate auction such as free and Pro. For example: you have “WordPress Auction Plugin” (free version) activated and if you try to activate PRO version then it’ll throw an error like this.

To solve this, you just have to de-activate one version.

Are you using both Free plugin and Pro plugin for Ultimate Auction?
To verify this…go to Admin dashboard -> Plugins -> Installed Plugins and check for names such as “WordPress Auction Plugin”, “Ultimate Auction” and “Ultimate Auction Pro”. In-case you have these entries de-activate them and try activating “WordPress auction plugin” OR “Ultimate Auction Pro” which ever you intend to use.

Cheers,
Nites

Hi-

Check my wp-admin – I do not have any other version of WordPress Auction Plugin on my site. However, I do have easy digital downloads installed but that’s it. Not sure why this is happening. Is there any other 3rd party plugins you know off that may be causing a conflict?
Please advise.

Thanks,
Charmp121

Sorry for delayed reply. I somehow missed this post. Realized it now as I got same problem for new user.

Here is the fix:
======================
In plugin main file ultimate-auction.php, change code –
require(ABSPATH . ‘wp-admin/includes/upgrade.php’);

with

require_once(ABSPATH . ‘wp-admin/includes/upgrade.php’);