I cleared the cache folder but the problem remains. The dialog box to pick a file opens up, but my mouse cannot select any folder or file (or click anywhere in the dialog). I can use a few keys, but I cannot select a file. The only out of this is to close the Application and reload it. Right now I can only upload 1 file per application startup.
I also had the "e" key on the keyboard opening up the emoji menu. I used the link you posted to Apple's site and set up an Emoji shortcut for StudioProMac and now the E no longer brings up the emoji menu, but I still cannot upload more than 1 file.