Question

I have a problem with a web service that will not run anymore. It previously had the 64-bit version installed, but now the 32-bit is installed. However, it seems that it is looking for a 64-bit version of the ChilkatDotNet2.dll, which is strange. The version that was installed by the MSI-package is X86.

C:\Program Files (x86)\Sipp\Market Server\bin>asminfo.exe
ChilkatDotNet2.dll ChilkatDotNet2, Version=9.3.0.0, Culture=neutral,
PublicKeyToken=eb5fc1fc52ef09b d | X86

I enabled FusionLog and it gave the following output:

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 ‘ChilkatDotNet2’ 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 ‘ChilkatDotNet2’ could not be loaded.

=== Pre-bind state information === LOG: User = SF\sonsupport LOG: DisplayName = ChilkatDotNet2 (Partial) LOG: Appbase =
file:///C:/Program Files (x86)/Sipp/Market Server/ LOG: Initial
PrivatePath = C:\Program Files (x86)\Sipp\Market Server\bin Calling
assembly : (Unknown).
=== LOG: This bind starts in default load context. LOG: Using application configuration file: C:\Program Files (x86)\Sipp\Market
Server\web.config LOG: Using host configuration file:
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\Aspnet.config LOG:
Using machine configuration file from
C:\Windows\Microsoft.NET\Framework64\v2.0.50727\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/Framework64/v2.0.50727/Temporary
ASP.NET Files/server/b8e4736f/d41d574d/ChilkatDotNet2.DLL. LOG:
Attempting download of new URL
file:///C:/Windows/Microsoft.NET/Framework64/v2.0.50727/Temporary
ASP.NET
Files/server/b8e4736f/d41d574d/ChilkatDotNet2/ChilkatDotNet2.DLL. LOG:
Attempting download of new URL file:///C:/Program Files
(x86)/Sipp/Market Server/bin/ChilkatDotNet2.DLL. ERR: Failed to
complete setup of assembly (hr = 0x8007000b). Probing terminated.

Stack Trace:

[BadImageFormatException: Could not load file or assembly
‘ChilkatDotNet2’ or one of its dependencies. An attempt was made to
load a program with an incorrect format.]
System.Reflection.Assembly._nLoad(AssemblyName fileName, String
codeBase, Evidence assemblySecurity, Assembly locationHint,
StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean
forIntrospection) +0
System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef,
Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean
forIntrospection) +416
System.Reflection.Assembly.InternalLoad(String assemblyString,
Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean
forIntrospection) +166 System.Reflection.Assembly.Load(String
assemblyString) +35
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String
assemblyName, Boolean starDirective) +190

[ConfigurationErrorsException: Could not load file or assembly
‘ChilkatDotNet2’ 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) [phone]
System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory()
+388 System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo
ai) +232
System.Web.Configuration.AssemblyInfo.get_AssemblyInternal() +48
System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection
compConfig) +210
System.Web.Compilation.WebDirectoryBatchCompiler..ctor(VirtualDirectory
vdir) +191
System.Web.Compilation.BuildManager.BatchCompileWebDirectoryInternal(VirtualDirectory
vdir, Boolean ignoreErrors) +54
System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath
virtualPath) +295
System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath
virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean
allowBuildInPrecompile) +476
System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext
context, VirtualPath virtualPath, Boolean noBuild, Boolean
allowCrossApp, Boolean allowBuildInPrecompile) +116
System.Web.Compilation.BuildManager.GetCompiledCustomString(String
virtualPath) +39
System.ServiceModel.HostingManager.GetCompiledCustomString(String
normalizedVirtualPath) +202
System.ServiceModel.HostingManager.CreateService(String
normalizedVirtualPath) +33
System.ServiceModel.HostingManager.ActivateService(String
normalizedVirtualPath) +46
System.ServiceModel.HostingManager.EnsureServiceAvailable(String
normalizedVirtualPath) +654

[ServiceActivationException: The service ‘/server/service.svc’ cannot
be activated due to an exception during compilation. The exception
message is: Could not load file or assembly ‘ChilkatDotNet2’ or one of
its dependencies. An attempt was made to load a program with an
incorrect format..]
System.ServiceModel.AsyncResult.End(IAsyncResult result) [phone]
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.End(IAsyncResult
result) [phone]
System.ServiceModel.Activation.HostedHttpRequestAsyncResult.ExecuteSynchronous(HttpApplication
context, Boolean flowContext) +265
System.ServiceModel.Activation.HttpModule.ProcessRequest(Object
sender, EventArgs e) +227
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
+80 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +171

Answer 1

IIS > Application pools > your application pool > Advanced settings > set Enable 32bit application to true.