System.Data.SqlClient.SqlException: Invalid object name 'dbo.Slider'

I'm developing an asp.NET application using Entity Framework and I'm getting the following exception whenever I try to create a record in my dbo.Slider table:

System.Data.Entity.Infrastructure.DbUpdateException:
An error occurred while updating the entries.
See the inner exception for details. --->
System.Data.Entity.Core.UpdateException:
An error occurred while updating the entries.
See the inner exception for details. ---> System.Data.SqlClient.SqlException:
Invalid object name 'dbo.Slider'. at ...

I'm using an Entity Framework service called efService that I created and call on my code-behind form:

protected Services.EFService efService = new Services.EFService();

I try to create the slider on a button click and here's the section of code I use before it breaks in the button:

slider.DateCreated = DateTime.Now;
slider.Caption = txbPhotoCaptionCreate.Text;
slider.IsPublic = cbxPhotoPublicCreate.Checked;
slider.Path = string.Empty;
slider.ThumbnailPath = string.Empty;
slider.DisplayPath = string.Empty;

int sliderId = efService.CreateSlider(slider);  // It breaks here

Here is the CreateSlider efService that I've made:

public int CreateSlider(Models.EF.Slider slider)
{
    DB.Sliders.Add(slider);
    DB.SaveChanges();

    return slider.Id;
}

This all works on my other tables which have pretty much the exact same functionality.

Here's the SQL I use to create my Slider table:

CREATE TABLE [dbo].[Slider] 
(
    [Id]              INT IDENTITY(1,1)  NOT NULL,
    [Caption]         VARCHAR (50)       NOT NULL,
    [Position]        INT                NOT NULL DEFAULT 1,
    [IsPublic]        BIT                NOT NULL DEFAULT 1,
    [Path]            NVARCHAR (250)     NULL,
    [ThumbnailPath]   NVARCHAR (250)     NULL,
    [DisplayPath]     NVARCHAR (250)     NULL,
    [DateCreated]     DATETIME           NOT NULL,

    PRIMARY KEY CLUSTERED ([Id] ASC)
);

There are no build errors, the whole application runs fine except when I try to create a record for Slider. Through a lot of debugging I can conclude that the problem occurs when the DB.SaveChanges() occurs.