Hi, I have noticed a number of people having issues unable to edit posts with the TinyMCE visual editor buttons not showing.
After reading solutions that required re-installation or copying TinyMCE files, I realized why I had the necessary files missing.
If you are using a Windows Server, the default security will block certain files in the zip file download. If the file is blocked, an "unblock" option is available in file properties. Although the file is flagged, when you extract the files, you are not notified that certain files are not extracted.
This is a repeatable example:
- Unzip WP 2.8.4 (blocked) = 551 files
- Unzip WP 2.8.4 (unblocked) = 726 files
I hope this helps anyone with a similar situation.
One way to help users may be to include a file integrity check during the install procedure or installation FAQ.
This is reproducible for manual installations. I have not verified if a similar problem occurs during automatic upgrades through WP.