First post on the WordPress.org support forums, so sorry if I've missed something.
I receive the following error when I activate the Mandrill plugin:
Mandrill: wp_mail has been declared by another process or plugin, so you won't be able to use Mandrill until the problem is solved.
I'm using Mandrill 1.20 and I have narrowed the error down to Cart66 Professional 188.8.131.52 (being the other process using wp_mail).
Anyway, I was unsure who I should be asking about a resolution to this, so I figured why not both (Mandrill and Cart66). This way I can help other people find a resolution to this problem quicker in the future.
Any advice would be appreciated, I'll post back any information I receive from Cart66 regarding this.