after installing your Multistep Product Configurator we have an issue with our webiste. It creates a HTTP 500 error and the site is (and the backend) is down. I think, you have some server requirements we actually don't fit. Can you specify it?
Sorry about the late reply - it's always faster to contact us over support tickets. If anyone should still encounter this problem, please contact support - we'll send you a version of the plugin that will fix this problem (should also be on envato by now as far as I know).