Problem with hotfix

Hi, I installed and tried the hotfix some minutes ago and I have to reinstall the 737NGX without hotfix: I tried to start a flight with hotfix from EDDL and I had a CTD (before I could see the panel and the airport) without any error message (and I found no entry in the Windows event log)...I was able to make some flights from EDDL without hotfix and I was able to complete most of these flights (I had some OOM problems). I use FSX SP2 and XP SP3, an Intel C2D cpu (2,8 GHz) and 4 GB RAM (3,x GB available). I try a reinstall without hotfix and I try to reduce my graphics settings because of some OOM problems.Hope that I am able to make some flights after that. Regards Kalle