疑難排解 .NET Framework 目標錯誤:
https://msdn.microsoft.com/zh-tw/library/cc668079.aspx

以下是上述Config語法要需要修改的部分:
<sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" >
<section name="SmartTechnology.Properties.Settings" type="System.Configuration.ClientSettingsSection, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" allowExeDefinition="MachineToLocalUser" requirePermission="false" />

依照"疑難排解"範例將Config語法修改為:
<sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup" >
<section name="SmartTechnology.Properties.Settings" type="System.Configuration.ClientSettingsSection" allowExeDefinition="MachineToLocalUser" requirePermission="false" />


PS:在參考了微軟官方的 .NET Framework 疑難排解網頁的修改方法，目前此問題是暫時解決了。