"....the same, so buggy. 1 week of tinkering lost. So disappointing.."
This is a user to user forum. There is nothing I can do if you are trying to send a complaint to Adobe. If you can accept Premiere Elements as being a normally reliable program, users here might be able to find the problematic anomolies in your maching or installation. Something is going wrong on your machine with a program that does not go wrong on the majority. Start with a reinstallation.