Hello Josh, I've been trying to buy Aggror's Spline Tools since yesterday, but Steam always gets the error message: Oops, sorry!
When processing your request an error has occurred:
An unexpected error occurred while authorizing your transaction. Please try again.
Steam Support wrote me this:
Thank you for the informations.
It looks like this is a bug in Leadwerks Game Engine - Professional Edition and not a problem with Steam.
To get help for Leadwerk's Game Engine - Professional Edition, support for the game is the right place to go.
Please find the contact information of the corresponding support department in the following link: https://help.steampowered.com/wizard/HelpWithGameTechnicalIssue/?appid=287760