I downloaded the Events Registration Widget on version 7.2. I followed the comments on http://www.sitefinity.com/developer-network/forums/general-discussions-/event-registration-widget---sitefinity-7-0
Basically recompiled the solution but referencing the site's dlls. Everything seems to be working fine, and I was able to follow the video tutorial on the "Sitefinity Events Registration Installation" video.
However, when I go to the live site, when I click on an event I get the following exception. I don't know if this is due to misconfiguration on my part (although I'm following the tutorial) or if it's due to compiling for 7.2.
[NullReferenceException: Object reference not set to an instance of an object.]
EventsRegistration.FormsControlCustom.InitializeControls(GenericContainer container) +857
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +974
Any ideas are appreciated.
-- UPDATE --
This seems to have to do with associating the event to a product. I created a text custom field in the event to hold the product name, and I copy the title of the product into that field (don't know if there's another identifier to input there). Without associating the event to a product the form gets rendered, although the submit is not working.