Asp.net Could not load file or assembly error

Question

I was sent source code for a website. I have since opened it in Visual Studio Express for Web. When i try build i get Could not load file or assembly error.

The assemblies are added in the web config under assemblies section.

 <add assembly="DevExpress.Web.ASPxGridView.v10.1, Version=10.1.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
    <add assembly="DevExpress.Web.v10.1, Version=10.1.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
    <add assembly="DevExpress.Web.ASPxEditors.v10.1, Version=10.1.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
    <add assembly="DevExpress.Data.v10.1, Version=10.1.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
    <add assembly="DevExpress.Web.ASPxTreeList.v10.1.Export, Version=10.1.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
    <add assembly="DevExpress.XtraPrinting.v10.1, Version=10.1.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
    <add assembly="DevExpress.Web.ASPxTreeList.v10.1, Version=10.1.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
    <add assembly="DevExpress.Utils.v10.1, Version=10.1.8.0, Culture=neutral, PublicKeyToken=B88D1754D700E49A" />
    <add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
    <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
    <add assembly="System.Security, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A" />
    <add assembly="System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
    <add assembly="System.Data.Entity.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089" />
    <add assembly="CrystalDecisions.Web, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304" />
    <add assembly="CrystalDecisions.CrystalReports.Engine, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" />
    <add assembly="CrystalDecisions.ReportSource, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" />
    <add assembly="CrystalDecisions.Shared, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" />
    <add assembly="CrystalDecisions.ReportAppServer.ClientDoc, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" />

Can anyone explain what is the purpose fo adding them here and why i am getting this error. Thanks.

Do you have those components installed on your system?

PhoenixReborn
– PhoenixReborn

2013-12-03 13:07:08 +00:00
Commented Dec 3, 2013 at 13:07 — PhoenixReborn
– PhoenixReborn, Commented Dec 3, 2013 at 13:07
@PhoenixReborn No, do i need to install them on the GAC?

Lucky Luke2
– Lucky Luke2

2013-12-03 13:10:06 +00:00
Commented Dec 3, 2013 at 13:10 — Lucky Luke2
– Lucky Luke2, Commented Dec 3, 2013 at 13:10
You would need to install them somewhere.

PhoenixReborn
– PhoenixReborn

2013-12-03 13:12:24 +00:00
Commented Dec 3, 2013 at 13:12 — PhoenixReborn
– PhoenixReborn, Commented Dec 3, 2013 at 13:12

shamp00 · Accepted Answer · 2013-12-03 23:05:09Z

1

You are missing some third party components. You need to install the correct versions of these which may require purchasing licences for them.

The DevExpress assemblies are from here. DevExpress components are commercial products. They have a free trial version, but their version numbers are based on the year so the 10.1 assemblies in your config file are from 2010 and I'm not sure where you could find a free trial for that specific version.

The CrystalDecisions assemblies are part of Crystal Reports v4. I don't know enough about Crystal to know if it's all you need, but you can find the 13.0.2 installer here.

answered Dec 3, 2013 at 23:05

shamp00

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