Receiving this error preventing a itemadded EventReceiver from working. I deployed the code below in a sandbox test envionment, and retracted it. I cannot get this error to go away. Eveytime my new event Receiver tries to trigger, this is produced.
How do I succesfully remove any remains of this old event receiver: ItemAdding
Error loading and running event receiver ItemAdding.EventReceiver1.EventReceiver1 in ItemAdding, Version=188.8.131.52, Culture=neutral, PublicKeyToken=6070bdb4749d8c90. Additional information is below.
Unable to load assembly group. The user assembly group provider was unable to provide any user assemblies for the specified assembly group.