Mame Import crashes at the end of the operation

[Armin Löwenstein (ArmiN)]

Collection was modified; enumeration operation may not execute.

App: LaunchBox
Version: 11.11
Type: System.InvalidOperationException
Site: Void ThrowInvalidOperationException_InvalidOperation_EnumFailedVersion()
Source: System.Private.CoreLib

at System.Collections.Generic.List1.Enumerator.MoveNextRare() at System.Linq.Enumerable.SelectListIterator2.MoveNext()
at Unbroken.LaunchBox.Windows.Desktop.MenuActions.ImportRomFilesMenuAction.InvokeTransactionGlobal(IReadOnlyCollection1 spec, Object b, Boolean ispool) at ModelIndexer.InsertHttpWorker(IReadOnlyCollection1 spec, String b, Boolean ispool, ModelIndexer )
at Unbroken.LaunchBox.Windows.Desktop.MenuActions.ImportRomFilesMenuAction.ListTransactionGlobal(IReadOnlyCollection1 spec, Boolean applyb) at SingletonIndexer.InsertHttpWorker(IReadOnlyCollection1 spec, Boolean applyb, SingletonIndexer )
at Unbroken.LaunchBox.Windows.Desktop.MenuActions.ImportRomFilesMenuAction.Finish(RomImportTask task)
at QueueParams.InsertHttpWorker(RomImportTask task, QueueParams )
at Unbroken.LaunchBox.Windows.Desktop.MenuActions.ImportRomFilesMenuAction.<>c__DisplayClass1_0.GetTransactionDescriptor()
at Unbroken.LaunchBox.Windows.Threading.<>c__DisplayClass0_0.RegisterConcreteWatcher(Object )
at Unbroken.LaunchBox.Windows.Threading.<>c__DisplayClass0_0.ManageTypeParam()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()

Recent Log:

21:09:54 Exception