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We successfully upgraded up to version 4.8.1 last week. Is it possible to jump next to 4.11.10 or will I need to go to 4.9.x and 4.10.x first?
Well, decided to try it and so far, no good. Install came up, walked through with no issues. But when I try and view my site I get an error, below. Also, when I log in to the back office, I have no content tree.
Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.
[NullReferenceException: Object reference not set to an instance of an object.]
umbraco.UmbracoDefault.OnPreInit(EventArgs e) +202
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1843
Try to see this documentation https://our.umbraco.org/documentation/getting-started/setup/upgrading/version-specific
There are something that you need to do from version 4.8 to version 4.10.0 and some specific upgrades fro 4.10.0 to 4.11.10. Then is always a good idea to follow the general upgrading documentation too.
Hope this helps,
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