Hi, I cannot install K2, I am using win7 32-bit. But my colleague can install it because he is using win7 64-bit The following is the error log. The following errors were logged as part of the install: K2 for Visual Studio 2010 error: Input string was not in a correct format. The following warnings were logged as part of the install: Could not find registry key: SOFTWAREWow6432NodeMicrosoftVisualStudio10.0DataProviders{E2EA1316-8D20-42bc-8C14-AA5C53084080} Could not ensure registry key: SOFTWAREWow6432NodeMicrosoftVisualStudio10.0DataProviders{E2EA1316-8D20-42bc-8C14-AA5C53084080} value: C:Program FilesMicrosoft Visual Studio 10.0Common7IDEExtensionsK2SourceCode.SmartObjects.VisualStudio.dll, Exception: System.FormatException: Input string was not in a correct format. at System.Text.StringBuilder.FormatError() at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args) at System.String.Format(IFormatProvider provider, String format, Object[] args) at SourceCode.Install.Common.Classes.SC_Trace.FormatMessage(String message, Object[] messageArgs) at SourceCode.Install.Common.Classes.SC_Trace.WriteWarning(String msg, Object[] messageArgs) at SourceCode.Install.Common.SourceCodeLog.LogMsg(String sSource, String sMsg, MSG_ID iType, Boolean isCached) at SourceCode.Install.Common.SourceCodeLog.LogMsg(String sSource, String sMsg, MSG_ID iType) at SourceCode.SetupManager.Configuration.cfg_Warning(Object sender, LogEventArgs e) at SourceCode.Configuration.Authoring.ConfigureBase.OnWarningLogging(Object sender, String message) at SourceCode.VisualStudio2010.Configuration.Config.EnsureRegistry()