Answered Resource panel does not work properly!

There is another way to set the parent. You can click and drag the resource to the parent you want to have it under. You might try that.

Also, if you upgraded to the latest version, you should manually delete the files in the core/cache directory and clear your browser cache and cookies. A leftover cookie or cache file can cause weirdness in the Manager.

I meant, how did you get the files onto the server? Some methods are liable to cause corruption of the files. If you cannot open a new resource, go to its Settings tab, then click on the desired parent resource to set its Parent Resource, that sounds very much like a corrupted file somewhere on installation.

The host is important, as some hosts have problems with MODX because of the way the servers are configured. GoDaddy and HostGator are among common problem hosting providers. Some cloud-type hosting services also have problems. I have on a few occasions worked with clients whose hosting had limits on the number of requests that can be made in a given period of time, and the AJAX requests MODX uses to load the Manager page were in excess of that limit, so parts of the Manager interface, such as the Resource Tree, would not be fully loaded.

You cannot right-click on a resource, choose Create, then Document and create a child document? Does clicking on a document in the Resource Tree open it for editing?

By the way, dragging a resource onto another to make it a child does not set the Container checkbox of the parent. There was a good deal of discussion on this issue, and now there is a System Setting to control this behavior in some cases, but it still doesn't automatically set the is_folder on drag-and-drop. https://github.com/modxcms/revolution/issues/9635 [ed. note: sottwell last edited this post 10 years, 6 months ago.]

Uploading the files like that can lead to getting one or more files corrupted during upload, especially in the case of all of those little javascript files in the manager. It is always recommended to upload the zip archive, and unzip it and move the files into place on the server. The install.php script here takes care of all of that for you. https://github.com/sottwell/installer

A parent element is usually also a container, yes. There are some technical quibbles over it, but in general a 'container' resource has children, and a resource that has children should be a 'container'. It's a matter of a field in the database, "isfolder". MODX internally has several internal methods for determining if a resource is a parent, so having that "isfolder" field set to 0 or 1 doesn't necessarily mean that a given MODX process will use it. Menu snippets usually do, though.

I think this is still accurate, but I haven't tested it in a while.

http://bobsguides.com/blog.html/2013/04/27/understanding-isfolder-and-haschildren%28%29/