Launchbox/Bigbox will not start anymore

[Former user]

I was updating the Arcade XML file after transtate some text (just the Notes field). It was showing errors due to some accent and so, so I just fixed them. But after that, LB and BB were not launching again. This is the error shown:

La cadena de entrada no tiene el formato correcto.

App: LaunchBox Version: 7.14 Type: System.FormatException Site: Void StringToNumber(System.String, System.Globalization.NumberStyles, NumberBuffer ByRef, System.Globalization.NumberFormatInfo, Boolean) Source: mscorlib

at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) at (Game , DataRow , String ) at Unbroken.LaunchBox.Data.Game.GetNullableIntegerValue(DataRow row, String column) at (Game , DataRow ) at Unbroken.LaunchBox.Data.Game.LoadFromDataRow(DataRow row) at (DataManager , String ) at Unbroken.LaunchBox.Data.DataManager.LoadGames(String filePath) at (<>c__DisplayClass205_1 ) at Unbroken.LaunchBox.Data.DataManager.<>c__DisplayClass205_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:

0:16:38 Exception

I tried reinstalling .NET and nothing... I tried also installing the last LB version 7.14 over the broken one (7.11) and the error is still there. I am not sure what to do now.

Thanks, Martin