Question

I have implemented the Tessnet2 library to work in my Web Project.
While debugging i’ve gotten rid of all the “usual” bugs++.

When i deploy this solution to the webserver with visual studio 2010, and test the site i get the error message:

Could not load file or assembly 'tessnet2_32' or one of its dependencies. 
An attempt was made to load a program with an incorrect format.

The stacktrace is as follows:

[BadImageFormatException: Could not load file or assembly 'tessnet2_32' 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, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) +0
   System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection, Boolean suppressSecurityChecks) +567
   System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +192
   System.Reflection.Assembly.Load(String assemblyString) +35
   System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +123

[ConfigurationErrorsException: Could not load file or assembly 'tessnet2_32' 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() +485
   System.Web.Configuration.AssemblyInfo.get_AssemblyInternal() +79
   System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +337
   System.Web.Compilation.BuildManager.CallPreStartInitMethods() +280
   System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters, PolicyLevel policyLevel, Exception appDomainCreationException) +1167

[HttpException (0x80004005): Could not load file or assembly 'tessnet2_32' or one of its dependencies. An attempt was made to load a program with an incorrect format.]
   System.Web.HttpRuntime.FirstRequestInit(HttpContext context) [phone]
   System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +141
   System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) [phone]

Question is, has anybody seen this before? and handled it? or know a fix?

I have tried moving tessdata-folder to bin folder on server, i’ve made sure the tessnet2_32.dll file and pdb file is on server in bin folder…

All other libs should also be present.

Answer 1

The server is a 64-bit process and tessnet2_32.dll is 32-bit. So you can’t load the DLL and get this exception.