Hi ,

I am working on upgrading the site from CMS 6R2 to 7. I have already solved many issues occuring while upgrading but I am stuck presently at this and is finding no solution in Internet to go forward.

I am witnessing this error:-

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Could not get unique plugin attribute for type Itera.Property.PropertyFolderUrl. Both 'EPiServer.PlugIn.PageDefinitionTypePlugInAttribute' in 'EPiServer, Version=7.0.586.1, Culture=neutral, PublicKeyToken=8fe83dea738b45b7' and 'EPiServer.PlugIn.PropertyDefinitionTypePlugInAttribute' in 'EPiServer, Version=7.0.586.1, Culture=neutral, PublicKeyToken=8fe83dea738b45b7' matches 'EPiServer.PlugIn.PropertyDefinitionTypePlugInAttribute'. 

I have changed the PageDefinitionTypePlugIn to PropertyDefinitionTypePlugIn whereever it is used in custom properties . I have also searched in my website and in one page i found the use of Itera.property class here is the code

 if (isMainBodyForProfileActivated)
            {
                
                Itera.Examples.Property.PropertyMulitPageLinks multiProp = new Itera.Examples.Property.PropertyMulitPageLinks();

                multiProp.ParseToSelf(PageReference.StartPage.GetProperty("MultiContent"));
                

                foreach (PageData page in multiProp.GetPages())
                {
                    if (!PageReference.IsNullOrEmpty(page.PageLink) && page.ACL.QueryDistinctAccess(EPiServer.Security.AccessLevel.Read))
                    {                        
                        contentDiv.InnerHtml = page.GetStringProperty("MainBody").ToString();
                        
                        break;
                    }
                }

                ctrlBody.Visible = false;
            }

but after removing this also the problem exist. Can anybody help me with this?