Key error on launch

[Former user]

I'm on Windows 10 using the 6.4 BETA 1 I imported my MAME collection using LightSpeed so don't know if it's related. I've used the program before without issue.

Here is the error:

System.ArgumentException: The key already existed in the dictionary. at System.Collections.Concurrent.ConcurrentDictionary`2.System.Collections.Generic.IDictionary<TKey,TValue>.Add(TKey key, TValue value) at (DataManager , Boolean ) at LaunchBox.Data.DataManager.Load(Boolean settingsOnly) at LaunchBox.Data.DataManager..ctor(Boolean bare, Boolean settingsOnly) at (String[] ) at LaunchBox.Program.Main(String[] args)

[Jason Carr]

Hi Anonymous, it appears that Lightspeed has an issue that is causing problems with the LaunchBox XML. We should report this issue to Antropus (the developer of Lightspeed) on the forums. I'll hit him up.