koobas.hobune.stream
Edit asset DLL?
Hi.
I have bought the asset MapToolkit V2.0 from the asset store. I have tried to contact the developer but got no response.
The asset consists of a plugin (DLL file) 
How can I edit the Manager script in MonoDevelop?
If it's supplied only as a compiled DLL, unfortunately you can't. (Well, you could try to decompile the DLL using ILSpy to recover the original source code).
Actually, I'm somewhat surprised that that asset is even allowed on the Unity asset store, as it appears to contravene the Google Maps terms of use: "...you are not permitted to use or provide any part of the Service or Content (such as map imagery, geocoding, directions, places, or terrain data) in an API that you offer to others..." (Section 10.2a https://developers.google.com/maps/terms)
@GrahamDunnett - is there a process for reporting assets? Or is it assumed that if they've already been approved by Unity that you're happy with the licensing terms?
