Had my hosting provider upgrade me to Revo 2.2.10 - seems TinyMCE was also updated to version 4.3.3.
I have had some minor issues since but the one bugging me most right now is when I try to insert an image into a page using TinyMCE, I get a broken link. Looking at the HMTL I see:
<image src= "/assets/components/tinymce/assets/resources/images/icons/register.png alt="" />
When the correct path that works is
<image src= "assets/resources/images/icons/register.png alt="" />
I found this on the MODx Wiki
http://wiki.modxcms.com/index.php/TinyMCE
Image does not show or are broken in the Image Editor
This isn't a problem with TinyMCE but rather the Image Editor portion of the Resource Browser. The problem occurs because the Image Editor is using an incorrect Resource URL path. Go to Tools-Configuration, click on the Interface & Features tab, and scroll down to the Resource URL option. Chances are it's set to a relative URL. Change it to either a full URL or a root relative URL.
However, I am not quite sure where to change this setting. When I go to System / System Settings in Revo and search for "filemanager", I see several settings for file manager path and file manager URL but they all say the settings are deprecated.
I am sure this is the root of my problem (pardon the pun) but I am at a loss on where to go and what setting to change to make the file manager / TinyMCE work together correctly.
FYI, I also noted that since the upgrade, my existing images no longer seem to have a correct hyperlink to their original image location which also seems to confirm my suspicions about a file manager path problem.
FYI, I would provide PHP and server versions but I don't think they're the issue here. They are all versions supported by Revo 2.2.10