当我在Visual Studio Web服务器中调用url http://localhost:15312/images/test.png?width=100时（我也尝试过Webmatrix），我得到：
Source may only be an instance of string, VirtualFile, IVirtualBitmapFile, HttpPostedFile, HttpPostedFileBase, Bitmap, Image, or Stream.
Parameter name: source
/resizer.debug的输出：
Image resizer diagnostic sheet 2012-06-30 12:51:10
2 Issues detected:
(Warning): NoCache is only for development usage, and cannot scale to production use.
Add DiskCache or CloudFront for production use
(Warning): Potentially incompatible ImageResizer assemblies were detected.
Please make sure all ImageResizer assemblies are from the same version. Compatibility issues are possible if you mix plugins from different releases.
1.0.0 assemblies: ImageResizerTest
3.2.2 assemblies: ImageResizer, ImageResizer.Mvc
You are not using any paid bundles.
Registered plugins:
ImageResizer.Plugins.Basic.DefaultEncoder
ImageResizer.Plugins.Basic.NoCache
ImageResizer.Plugins.Basic.ClientCache
ImageResizer.Plugins.Basic.Diagnostic
ImageResizer.Plugins.Basic.SizeLimiting
ImageResizer.Plugins.MvcRoutingShim.MvcRoutingShimPlugin
ImageResizer.Plugins.Basic.VirtualFolder
Configuration:
<resizer>
<diagnostics enableFor="AllHosts" />
<plugins>
<add name="MvcRoutingShim" />
<add name="VirtualFolder" virtualPath="~/images" physicalPath="Media/Images" vpp="false" />
</plugins>
</resizer>
Accepted querystring keys:
quality, format, thumbnail, maxwidth, maxheight, width, height, w, h, scale, stretch, crop, cropxunits, cropyunits, page, bgcolor, rotate, flip, sourceFlip, sFlip, sRotate, borderWidth, borderColor, paddingWidth, paddingColor, ignoreicc, frame, useresizingpipeline, cache, process, margin, anchor, dpi, mode, zoom,
Accepted file extensions:
bmp, gif, exif, png, tif, tiff, tff, jpg, jpeg, jpe, jif, jfif, jfi,
Environment information:
Running Microsoft Windows NT 6.1.7601 Service Pack 1 and CLR 4.0.30319.269
Trust level: Unrestricted
OS bitness: x86 !! Warning, running as 32-bit on a 64-bit OS(AMD64). This will limit ram usage !!
Executing assembly: C:\Program Files (x86)\Common Files\Microsoft Shared\DevServer\10.0\WebDev.WebServer40.exe
IntegratedPipeline: False
Loaded assemblies:
mscorlib Assembly: 4.0.0.0 File: 4.0.30319.269 Info: 4.0.30319.269
System.Web Assembly: 4.0.0.0 File: 4.0.30319.272 Info: 4.0.30319.272
System Assembly: 4.0.0.0 File: 4.0.30319.269 Info: 4.0.30319.269
System.Core Assembly: 4.0.0.0 File: 4.0.30319.233 Info: 4.0.30319.233
System.Configuration Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Xml Assembly: 4.0.0.0 File: 4.0.30319.233 Info: 4.0.30319.233
System.Runtime.Caching Assembly: 4.0.0.0 File: 4.0.30319.237 Info: 4.0.30319.237
Microsoft.Build.Utilities.v4.0 Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Web.RegularExpressions Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
Microsoft.Build.Framework Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Data Assembly: 4.0.0.0 File: 4.0.30319.237 Info: 4.0.30319.237
Microsoft.JScript Assembly: 10.0.0.0 File: 10.0.30319.1 Info: 10.0.30319.1
CppCodeProvider Assembly: 10.0.0.0 File: 10.0.30319.1 Info: 10.0.30319.1
System.Web.WebPages.Razor Assembly: 2.0.0.0 File: 2.0.20505.0
System.Web.WebPages Assembly: 2.0.0.0 File: 2.0.20505.0
System.Web.Http.WebHost Assembly: 4.0.0.0 File: 4.0.20505.0
System.Web.Mvc Assembly: 4.0.0.0 File: 4.0.20505.0
System.Web.WebPages.Deployment Assembly: 2.0.0.0 File: 2.0.20505.0
System.Web.WebPages.Deployment Assembly: 1.0.0.0 File: 1.0.20105.407
Microsoft.Web.Infrastructure Assembly: 1.0.0.0 File: 1.0.20105.407
System.Xml.Linq Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
App_global.asax.104g7ahn Assembly: 0.0.0.0
ImageResizerTest Assembly: 1.0.0.0 File: 1.0.0.0
WebDev.WebHost40 Assembly: 10.0.0.0 File: 10.0.40219.1 Info: 10.0.40219.1
System.Web.Http Assembly: 4.0.0.0 File: 4.0.20505.0
System.Web.Mobile Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.ServiceModel.Activation Assembly: 4.0.0.0 File: 4.0.30319.233 Info: 4.0.30319.233
System.ServiceModel Assembly: 4.0.0.0 File: 4.0.30319.233 Info: 4.0.30319.233
System.Runtime.DurableInstancing Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
SMDiagnostics Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Web.Extensions Assembly: 4.0.0.0 File: 4.0.30319.272 Info: 4.0.30319.272
Microsoft.CSharp Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Web.Services Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Drawing Assembly: 4.0.0.0 File: 4.0.30319.282 Info: 4.0.30319.282
System.EnterpriseServices Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.IdentityModel Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Runtime.Serialization Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.ServiceModel.Web Assembly: 4.0.0.0 File: 4.0.30319.233 Info: 4.0.30319.233
System.Activities Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.ServiceModel.Activities Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.WorkflowServices Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Data.DataSetExtensions Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.ComponentModel.DataAnnotations Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Web.DynamicData Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Web.ApplicationServices Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
ImageResizer Assembly: 3.2.2.0 File: 3.2.2.0 Info: 3-2-beta-2 Commit: 3704dd6
ImageResizer.Mvc Assembly: 3.2.2.0 File: 3.2.2.0 Info: 3-2-beta-2 Commit: 3704dd6
Newtonsoft.Json Assembly: 4.5.0.0 File: 4.5.1.14720
System.Net.Http Assembly: 2.0.0.0 File: 1.0.0.0
System.Net.Http.Formatting Assembly: 4.0.0.0 File: 4.0.20505.0
System.Net.Http.WebRequest Assembly: 2.0.0.0 File: 1.0.0.0
System.Web.Helpers Assembly: 2.0.0.0 File: 2.0.20505.0
System.Web.Razor Assembly: 2.0.0.0 File: 2.0.20505.0
System.Web.Routing Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Web.Abstractions Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
Anonymously Hosted DynamicMethods Assembly Assembly: 0.0.0.0
System.Xaml.Hosting Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
System.Xaml Assembly: 4.0.0.0 File: 4.0.30319.1 Info: 4.0.30319.1
答案 0 :(得分：1)
感谢您报告此错误！
此错误主要影响已为VirtualFolder安装更改了vpp =“false”的用户，但也影响了UNC路径和某些其他方案的用户。