I have installed the latest version of EDMC as suggested on a reddit post that Obsidian Ant mentioned. I took the advice and installed for trial purposes. On launching TCE it says in Extensions/Staus "I/O or OS-error" I have not tried loading the game as yet. But thought I would report this here.
I can confirm this issue and the lastest EDMC beta (3.992) has it only. Please switch back to the EDMC 3.51beta, which works well here. You have to remove EDMC before reinstalling.