there is a general support section of this forum, dedicated to things like your problem, where this thread would have had a better home.
General Support - 7 Days to Die
That said, I'm pretty sure you missed something to wipe, and the errors occuring are because it isn't a total clean install, but there are still remnants of some mods.
You said you removed the files. Did you keep the folders from a former installation?
When you are completely sure you did wipe everything, then go ahead and post a proper bug report.
There is a form for that, and that's the correct way.
Pretty sure nobody will email you.