Server Error in '/' Application - Could not load file or assembly - asp.net

Question

Can any body please tell me what might be wrong here and how I may go about fixing it?
Thanks
Could not load file or assembly 'FrameProcessor_dll' or one of its
dependencies. An attempt was made to load a program with an incorrect
format.
Description: An unhandled exception occurred during the execution of
the current web request. Please review the stack trace for more
information about the error and where it originated in the code.
Exception Details: System.BadImageFormatException: Could not load file
or assembly 'FrameProcessor_dll' or one of its dependencies. An
attempt was made to load a program with an incorrect format.
Source Error:
An unhandled exception was generated during the execution of the
current web request. Information regarding the origin and location of
the exception can be identified using the exception stack trace below.
Assembly Load Trace: The following information can be helpful to
determine why the assembly 'FrameProcessor_dll' could not be loaded.
=== Pre-bind state information === LOG: DisplayName = FrameProcessor_dll (Partial) WRN: Partial binding information was
supplied for an assembly: WRN: Assembly Name: FrameProcessor_dll |
Domain ID: 2 WRN: A partial bind occurs when only part of the assembly
display name is provided. WRN: This might result in the binder loading
an incorrect assembly. WRN: It is recommended to provide a fully
specified textual identity for the assembly, WRN: that consists of the
simple name, version, culture, and public key token. WRN: See
whitepaper http://go.microsoft.com/fwlink/?LinkId=109270 for more
information and common solutions to this issue. LOG: Appbase =
file:///C:/Users/Administrator/Downloads/Syncre/Syncre/SyncreWebServices/Syncre_LayerAB_WebService/
LOG: Initial PrivatePath =
C:\Users\Administrator\Downloads\Syncre\Syncre\SyncreWebServices\Syncre_LayerAB_WebService\bin
Calling assembly : (Unknown).
=== LOG: This bind starts in default load context. LOG: Using application configuration file:
C:\Users\Administrator\Downloads\Syncre\Syncre\SyncreWebServices\Syncre_LayerAB_WebService\web.config
LOG: Using host configuration file:
C:\Users\Administrator\Documents\IISExpress\config\aspnet.config LOG:
Using machine configuration file from
C:\Windows\Microsoft.NET\Framework\v4.0.30319\config\machine.config.
LOG: Policy not being applied to reference at this time (private,
custom, partial, or location-based assembly bind). LOG: Attempting
download of new URL
file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary
ASP.NET Files/root/90b7448e/a25f12e1/FrameProcessor_dll.DLL. LOG:
Attempting download of new URL
file:///C:/Windows/Microsoft.NET/Framework/v4.0.30319/Temporary
ASP.NET
Files/root/90b7448e/a25f12e1/FrameProcessor_dll/FrameProcessor_dll.DLL.
LOG: Attempting download of new URL
file:///C:/Users/Administrator/Downloads/Syncre/Syncre/SyncreWebServices/Syncre_LayerAB_WebService/bin/FrameProcessor_dll.DLL.
ERR: Failed to complete setup of assembly (hr = 0x8007000b). Probing
terminated.
Stack Trace:
[BadImageFormatException: Could not load file or assembly
'FrameProcessor_dll' or one of its dependencies. An attempt was made
to load a program with an incorrect format.]
System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String
codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint,
StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean
throwOnFileNotFound, Boolean forIntrospection, Boolean
suppressSecurityChecks) +0
System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String
codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint,
StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean
throwOnFileNotFound, Boolean forIntrospection, Boolean
suppressSecurityChecks) +34
System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName
assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly,
StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean
throwOnFileNotFound, Boolean forIntrospection, Boolean
suppressSecurityChecks) +152
System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString,
Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr
pPrivHostBinder, Boolean forIntrospection) +77
System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString,
Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean
forIntrospection) +16 System.Reflection.Assembly.Load(String
assemblyString) +28
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String
assemblyName, Boolean starDirective) +38
[ConfigurationErrorsException: Could not load file or assembly
'FrameProcessor_dll' or one of its dependencies. An attempt was made
to load a program with an incorrect format.]
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String
assemblyName, Boolean starDirective) +736
System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory()
+217 System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo
ai) +130
System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection
compConfig) +170
System.Web.Compilation.BuildManager.GetPreStartInitMethodsFromReferencedAssemblies()
+91 System.Web.Compilation.BuildManager.CallPreStartInitMethods(String
preStartInitListPath, Boolean& isRefAssemblyLoaded) +284
System.Web.Compilation.BuildManager.ExecutePreAppStart() +153
System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager
appManager, IApplicationHost appHost, IConfigMapPathFactory
configMapPathFactory, HostingEnvironmentParameters hostingParameters,
PolicyLevel policyLevel, Exception appDomainCreationException) +521
[HttpException (0x80004005): Could not load file or assembly
'FrameProcessor_dll' or one of its dependencies. An attempt was made
to load a program with an incorrect format.]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +9955652
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context)
+101 System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest
wr, HttpContext context) +254
Dependency Walker reveals that DLLS are intact.

Answer 1

check your IIS and ASP.NET set-up, and make sure that everything is running on target .net version. Check your application pool configuration too. It's not completely clear to detect the problem.
Also it may be fixed by Trying to clean Debug and Release folders in your solution.