Problem after transferred a solution from SharePoint Foundation to SharePoint Server

Question

After I transferred my solution from SharePoint Foundation to the production SharePoint Server some features don't work from My project. I am getting error when I try to add another web part or a list to the server after my project web part.

Error log shows me this collision:

11-07-2012 09:10:49.11 w3wp.exe (0x1AF0) 0x08AC SharePoint Foundation Logging Correlation Data xmnv
Medium Name=Request (POST:/?WikiPageMode=Edit&InitialTabId=Ribbon.EditingTools.CPEditTab&VisibilityContext=WSSWikiPage) c5debe0f-dcd8-4b88-a064-6c3a67616edc 11-07-2012 09:10:49.55 w3wp.exe (0x1AF0) 0x08AC SharePoint Foundation Logging Correlation Data xmnv Medium
Site=/ c5debe0f-dcd8-4b88-a064-6c3a67616edc 11-07-2012 09:10:49.55 w3wp.exe (0x1AF0) 0x08AC SharePoint Foundation
Monitoring b4ly High Leaving Monitored Scope (PostResolveRequestCacheHandler). Execution Time=434,578975819552 c5debe0f-dcd8-4b88-a064-6c3a67616edc 11-07-2012 09:10:49.65 w3wp.exe (0x1AF0) 0x08AC SharePoint Foundation General 90hv Unexpected
Detected use of SPRequest for previously closed SPWeb object. Please close SPWeb objects when you are done with all objects obtained from them, but not before. Stack trace: at Microsoft.SharePoint.WebControls.ScriptLink.SharePointClientJs_Register(Page page) at Microsoft.SharePoint.WebControls.ScriptLink.RegisterForControl(Control ctrl, Page page, String name, Boolean localizable, Boolean defer, Boolean loadAfterUI, String language) at Microsoft.SharePoint.WebControls.ScriptLink.RegisterForControl(Control ctrl, Page page, String name, Boolean localizable, Boolean defer, Boolean loadAfterUI, String language) at Microsoft.SharePoint.WebControls.ScriptLink.Register(Page page, String name, Boolean localizable, Boolean defer, Boolean loadAfterUI, String language, String uiVersion) at Microsoft.SharePoint.WebControls.ScriptLink.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) at System.Web.HttpApplication.PipelineStepManager.ResumeSteps(Exception error) at System.Web.HttpApplication.BeginProcessRequestNotification(HttpContext context, AsyncCallback cb) at System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) at System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags) at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags) at System.Web.Hosting.PipelineRuntime.ProcessRequestNotificationHelper(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags) at System.Web.Hosting.PipelineRuntime.ProcessRequestNotification(IntPtr managedHttpContext, IntPtr nativeRequestContext, IntPtr moduleData, Int32 flags) c5debe0f-dcd8-4b88-a064-6c3a67616edc 11-07-2012 09:10:49.69 w3wp.exe (0x1AF0) 0x08AC SharePoint Foundation Monitoring b4ly High
Leaving Monitored Scope (EnsureListItemsData#1). Execution Time=15,6924972307933 c5debe0f-dcd8-4b88-a064-6c3a67616edc 11-07-2012 09:10:49.70 w3wp.exe (0x1AF0) 0x08AC SharePoint Foundation General 837l Exception An unhandled exception occured. Watson will be invoked.
c5debe0f-dcd8-4b88-a064-6c3a67616edc 11-07-2012 09:10:49.70 w3wp.exe (0x1AF0) 0x08AC SharePoint Foundation Unified Logging Service c91s Monitorable
Watson bucket parameters: Microsoft SharePoint Foundation 4, ULSException14, 269cd32d "sharepoint foundation", 0e00178d "14.0.6029.0", e266f8d6 "stswel.dll", 0e00178d "14.0.6029.0", 4db90a0b "thu apr 28 08:32:43 2011", MISSING, 00142dc9 "00142dc9", c0000005 "c0000005", 3833376c "837l"
c5debe0f-dcd8-4b88-a064-6c3a67616edc 11-07-2012 09:10:49.70 w3wp.exe (0x1AF0) 0x08AC SharePoint Foundation General
8e2s Medium Unknown SPRequest error occurred. More information: 0x80020009 c5debe0f-dcd8-4b88-a064-6c3a67616edc 11-07-2012 09:10:49.70 w3wp.exe (0x1AF0) 0x08AC SharePoint Foundation Web Parts tkqm High
WebPartAdder_ItemCannotBeAddedULS
c5debe0f-dcd8-4b88-a064-6c3a67616edc 11-07-2012 09:10:49.72 w3wp.exe (0x1AF0) 0x08AC SharePoint Foundation Runtime
tkau Unexpected
System.Runtime.InteropServices.COMException: Attempted to use an object that has ceased to exist. (Exception from HRESULT: 0x80030102 (STG_E_REVERTED)) at Microsoft.SharePoint.Library.SPRequestInternalClass.GetWebListPermMask(String bstrUrl, String bstrListName) at Microsoft.SharePoint.Library.SPRequest.GetWebListPermMask(String bstrUrl, String bstrListName) c5debe0f-dcd8-4b88-a064-6c3a67616edc 11-07-2012 09:10:49.83 w3wp.exe (0x1AF0) 0x08AC SharePoint Foundation Monitoring b4ly Medium
Leaving Monitored Scope (Request (POST:/Rozliczenie.aspx?WikiPageMode=Edit&InitialTabId=Ribbon.EditingTools.CPEditTab&VisibilityContext=WSSWikiPage)). Execution Time=712,432725388283
c5debe0f-dcd8-4b88-a064-6c3a67616edc

Answer 1

Make sure you're not calling either

witryna.Dispose();

or do this

using(SPWeb witryna = SPContext.Current.Web)
{
// some code
}

Using 'using' will dispose the witryna when going out of using-clause, and you're not supposed to dispose objects created from SPContext. SharePoint takes care of that.