Keeps crashing at launch

[Former user]

App: LaunchBox Version: 7.10-beta-5 Type: System.Collections.Generic.KeyNotFoundException Site: TValue get_Item(TKey) Source: mscorlib

at System.Collections.Concurrent.ConcurrentDictionary`2.get_Item(TKey key) at (DataManager , String ) at Unbroken.LaunchBox.Data.DataManager.LoadGames(String filePath) at (<>c__DisplayClass201_1 ) at Unbroken.LaunchBox.Data.DataManager.<>c__DisplayClass201_1.<Load>b__1() at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()

Recent Log:

12:03:21 Exception