Can/should I upgrade directly from 6.2.4 to 8.latest or are there intermediary upgrades I should do first?

 

Is the latest version of 8.x stable/bug free or should I stay with 7.x?

 

dnn 6.02.4
net framework 4.0
ifinity url master
Microsoft-IIS/7.5
Microsoft SQL Server 2008 R2 (RTM) - 10.50.1600.1 (X64)

I upgraded from 6.2 to 7.32 as suggested:

1. Compiler Error Message: BC30456: 'DeleteSearchItems' is not a member of 'DotNetNuke.Data.DataProvider'.
remove content of app_code/XML folder and re-install latest version of XML module after the platform upgrade
Problem: the checkbox for 'accept license' is not there, so I can't install XML Copying files from previous install, crashed install and have to start over copying site & db.
None of the list boxes show any content (empty), so I can't change skins to try another skin.

2. Can I remove dupe key? And rerun in sql window? Run on website or on sql server?
00:00:07.176 - Executing Script:07.00.04.SqlDataProvider Error! (see 07.00.04.log.resources for more information)
System.Data.SqlClient.SqlException (0x80131904): The CREATE UNIQUE INDEX statement terminated because a duplicate key was found for the object name 'dbo.oa_ContentTypes' and the index name 'IX_oa_ContentTypes_ContentType'. The duplicate key value is (DNNArticle_Article).
The statement has been terminated.
at System.Data.SqlClient.SqlConnection. (SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.SqlCommand.RunExecuteNonQueryTds(String methodName, Boolean async)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(DbAsyncResult result, String methodName, Boolean sendToPipe)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at DotNetNuke.Data.SqlDataProvider.ExecuteScriptInternal(String connectionString, String script)
/*Fix bug 24977 */
UPDATE dbo.[oa_ModuleControls]
SET [ControlType] = 2 WHERE [ControlSrc] = N'DesktopModules/Admin/Extensions/UsageDetails.ascx'

3. Is there a friendly look for ControlBar? It looks like a funeral home at night. Dark blue writing on a black background.

4. 0:00:31.309 - Application Upgrades : 07.02.00 Error! What does this mean and how do I fix it?

1. remove content xml folder did fix error. However, I can't reinstall XML ... don't I need this? Aren't most of the resource files, dnn menu, etc. xml or xslt files. Or am I mis-understanding what XML module does?
2. OK
3. As I mentioned, I can't change skin, as none of the drop down or check boxes work. Going to look at database, see if I can change skin there. If I clickon dropdown for skin, it expands but there is no content. Dropdowns everywhere are blank (no content)
4. Thank you for pointing out where the 'error' file is. Having a cryptic message like 'Application Upgrades : 07.02.00 Error' does not help people like me, who just want to use and upgrade DNN. Like my car, I just want to drive it, don't want to know about pistons or spark plugs.