I have tried this twice now each time simply creating a custom module using Thunder. Each time the module appears in the admin area for modules but is uninstalled and attempting to install causes a screen refresh and the module to still not be installed.
Things I have Tried,,
Setting the .Net version to 4.5 for the external project.
A manual install through Settings->Advanced->System->Application Modules (As of yet Sitefinity insists that it cannot find the module file for the project when I attempt this)
Any help would be appreciated....