Five New Optimizely Certifications are Here! Validate your expertise and advance your career with our latest certification exams. Click here to find out more
AI OnAI Off
AddOns screen generates 500 error
Check modules folder if you have some old files laying around. My guess is that you still have pieces of an old package there somewhere. Or in bin folder...
Compare vs a fresh alloy site with addons installed if you can't locate...
Sep 23, 2016 15:34
Thanks for your answer. Removing all packages and installing them again did the job on my local version of the site. However on our Azure environment the problem persists. Any other things I could try?
Sep 27, 2016 13:22
Compare bin folder and modules/modulesbin folder and try to find the difference...somewhere you got some extra dlls you don't want there.
This is my 1000nd forum answer btw. Yey :)
CurrentUser.GetLife();
Edited,
Sep 27, 2016 14:36
I believe Daniel's solution is what you have to do:
- Check bin, modules/LanguageManager (or any addon you have) and modulesbin (this is default configured in web.config <probing privatePath="modulesbin" />) folder
- Compare those folder versus a fresh Alloy site with the same addons installed
- You might unexpectedly deploy/copy DLL there in your development phase
- You might install addon via web UI in old site, and now install/upgrade new nuget package by VS, it clashs.
Sep 28, 2016 6:26
How I fixed it:
1) Installed an older version of LanguageManager (latest 1.x) with NuGet.
2) Manually changed references from LanguageManager 2.x to LanguageManager 1.x in module.config/web.config/project files which NuGet somehow didn't do for me.
3) Restarted IIS.
Edited,
Oct 04, 2016 9:34
This topic was created over six months ago and has been resolved. If you have a similar question, please create a new topic and refer to this one.
Hello,
Our EpiServer CMS 7.5 site uses the LanguageManager add on and recently we're experiencing problems with this. Our users who have this plugin installed can't login anymore. When I try to go the Add-On management screen I see a popup with the following error:
[InvalidOperationException: Sequence contains more than one matching element] System.Linq.Enumerable.SingleOrDefault(IEnumerable`1 source, Func`2 predicate) +349 EPiServer.Packaging.Storage.StateStorage.Load(String packageId, String packageVersion) +929 EPiServer.Packaging.SitePackageInfoLoader.GetPackageInfo(IPackage package, IList`1 installedPackages, IList`1 updates, IList`1 disabledPackages, Boolean tryToReload) +1171 EPiServer.Packaging.SitePackageInfoLoader.GetPackageInfo(IPackage package, Boolean tryToReload) +105 EPiServer.Packaging.SitePackageManager.GetPackageInfo(IPackage package, Boolean tryToReload) +65 System.Linq.WhereSelectListIterator`2.MoveNext() +111 NuGet.CollectionExtensions.AddRange(ICollection`1 collection, IEnumerable`1 items) +98 EPiServer.Packaging.PackageService.GetListingOperationResult(OperationResult`1 getPackagesResult) +205 EPiServer.Packaging.UI.Models.PackagesHandler.GetListOfUpdateablePackages() +88 lambda_method(Closure , ControllerBase , Object[] ) +99 System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +209 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +35 System.Web.Mvc.<>c__DisplayClass15.b__12() +80 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +453 System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +453 System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +909 System.Web.Mvc.Controller.ExecuteCore() +129 System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +236 EPiServer.Shell.Web.Mvc.ModuleMvcHandler.ProcessController(IController controller) +50 EPiServer.Shell.Web.Mvc.ModuleMvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +28 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +921 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +137I already installed all latest versions of EPI libraries and the languagemanager via Nuget. Any thougts?