Hello,
Some time ago I've been given the task to manage several DNN installations (versions 5.x) that had been running for years but have been very, very neglected. On top of that, the previous 'developer' had the tendency to mess around with core files and file permissions which made my life a living hell. :) We already had a DNN 7.x installation of our own which was running fine.
While we initially planned to leave the installations running as they were, the first major issue we started experiencing was when clients with IE11 were completely unable to use the navigation menus, upon which we decided to upgrade the DNN 5.x installations to version 7.x. Worst decision ever. Though this upgrade did fix the navigation menus, a whole bunch of other issues emerged, such as document modules 'forgetting' and unlinking files, page/module permissions getting messed up, multilinguality inappropriately being applied to random portals, and so on. We've been patching issues for weeks and thankfully, have been able to address most of them.
There is however one issue that I can't figure out for the life of me, that I've already spent weeks Googling for, but just can't seem to fix.
The HTML / RAD Editor's Hyperlink Manager and Document Manager refuse to work. Which seems to be caused by the fact that https://www.mysite.com/WebResource.axd (called from Telerik.Web.Ui.WebResource.axd) isn't 'found' and returns a 404, in turn leading to several other script errors. These Javascript errors appear upon opening the dialog windows. The windows show up, but due to the Javascript errors appearing can't be used (saved / closed) at all.
I've already checked my Web.Config file for the (http)handler entries, which are present. We've upgraded to 7.4 today which unfortunately didn't fix this problem either. The upgrade to 7.4 didn't go flawless either, as some modules (the Telerik specifically...) couldn't be installed and I had to overwrite the new Telerik.Web.Ui.dll and Telerik.Web.Ui.Skins.dll files manually in the bin folder.
Anyone have any idea how to fix this?
I WAS intend on uploading a screenshot using the Image Manager in this HTML editor, but it seems the Image Manager isn't working here due to, ironically, /WebResource.axd returning a 500 Internal Server Error...