nop 2.10 installation error

Hello
when I try to install nopCommerce  2.10 or 2.0 using visual studio 2010 I got this error message on \nopCommerce_2.10_NoSource\Administration\Views\Helpers\Admin.cshtml

' expected a "(" after the helper name '

@helper Test<table>(){
    <div>test</div>
}


http://imgup.com/image-3D9C_4E6245F7.jpg

and when running nopCommerce  2.10 or 2.0 on local iis  5.1 (windows xp) nothing happened
but I can run  nopCommerce  1.9 on both visual studio 2010 and local iis 5.1 successfully
I have also installed mvc 3.0

http://imgup.com/image-ED90_4E6245BA.jpg
http://imgup.com/image-DCFC_4E6245EC.jpg

can anyone please tell me what is the exact requirement of nop 2.10 ?

colorless wrote:
Try to clear or delete this file. It should work fine

Thank you for your guidance.
by doing this some errors raised
    http://imgup.com/image-BA8C_4E632E14.jpg  

@model System.DateTime?

@Html.Telerik().DatePicker().Name(ViewData.TemplateInfo.GetFullHtmlFieldName(string.Empty)).Value(Model > DateTime.MinValue? Model : null)
    
Error  1  'System.Web.Mvc.HtmlHelper<System.DateTime?>' does not contain a definition for 'Telerik' and no extension method 'Telerik' accepting a first argument of type 'System.Web.Mvc.HtmlHelper<System.DateTime?>' could be found (are you missing a using directive or an assembly reference?) \nopCommerce_2.10_NoSource(1)\Views\Shared\EditorTemplates\Date.cshtml  

Error  2  'System.Web.Mvc.HtmlHelper<System.DateTime?>' does not contain a definition for 'Telerik' and no extension method 'Telerik' accepting a first argument of type 'System.Web.Mvc.HtmlHelper<System.DateTime?>' could be found (are you missing a using directive or an assembly reference?) \nopCommerce_2.10_NoSource(1)\Views\Shared\EditorTemplates\Date.cshtm

mvc 3.0 was not installed correctly.

I have a same problem. I have removed and reinstalled MVC 3. but the error still persist

Hi, I am trying to install NopCommerce 2.10 in my local machine and I am getting the following error.

Setup failed: System.InvalidOperationException: Sequence contains more than one element at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source) at System.Data.Objects.ELinq.ObjectQueryProvider.<GetElementFunction>b__3[TResult](IEnumerable`1 sequence) at System.Data.Objects.ELinq.ObjectQueryProvider.ExecuteSingle[TResult](IEnumerable`1 query, Expression queryRoot) at System.Data.Objects.ELinq.ObjectQueryProvider.System.Linq.IQueryProvider.Execute[S](Expression expression) at System.Data.Entity.Internal.Linq.DbQueryProvider.Execute[TResult](Expression expression) at System.Linq.Queryable.Single[TSource](IQueryable`1 source) at Nop.Services.Installation.InstallationService.InstallSettings() in D:\Projects\Project - Tests\MVC\NopCommerce\nopCommerce_2.10_Source\Libraries\Nop.Services\Installation\InstallationService.cs:line 4495 at Nop.Services.Installation.InstallationService.InstallData(String defaultUserEmail, String defaultUserPassword, Boolean installSampleData) in D:\Projects\Project - Tests\MVC\NopCommerce\nopCommerce_2.10_Source\Libraries\Nop.Services\Installation\InstallationService.cs:line 9150 at Nop.Web.Controllers.InstallController.Index(InstallModel model) in D:\Projects\Project - Tests\MVC\NopCommerce\nopCommerce_2.10_Source\Presentation\Nop.Web\Controllers\InstallController.cs:line 377

I would be very appreciate if someone could help me.

Many Thanks,
Thu

[email protected] wrote:
https://www.nopcommerce.com/boards/t/10620/200-beta-install-error-new-rev-existing-db.aspx

Thanks! It's working now.

However, the web site is still running slowly. The reason I am trying to upgrade to version 2.10 is I am getting some performance problem on version 2 and I found in release note that nopCommerce upgraded some performance issues in v2.10

I am running on Intel(R) Core(TM)2 CPU 1.80 GHz and 4GB memory.

Please can you give me any advices?

Many Thanks,
Thu

1. https://www.nopcommerce.com/boards/t/10624/20-speedperformance-concerns.aspx
2. https://www.nopcommerce.com/boards/t/11953/performance-considerations-for-21-ideas-and-questions.aspx