A new topic Upload and display file - Problem with TinyMCE has been added that supercedes this one
TINY MCE Problems.... upload and display file does not work
dialog for uploading a file. One can upload from a local disk, from a url or just link to another file already uploaded to the wiki---- i already uploaded Files .jpg... but i can not use the dialog for that files... nothing happens Than!
Open developer console of your browser (by hitting the F12 key), switch to the console tab, clear all its contents, do the same on the network tab, and try the upload or select a file again.
Then look for errors appearing here and also the network tab in case the error comes from a network request. Any error you get from there may be useful to debug the problem.
