Have played EB with the permanent patches now. Froze again after ca. 45 mins. This time at another turn and while the diplomacy window was opened. So there is no rule for when it crashes.

PS: I played with and without the Alexander Pack, in between, I have uninstalled EB and RTW completely to ensure it was not the Alexander Pack. It froze then too.
- When reinstalling EB, I first used my saved installation files (EB1.1.exe and EB12.exe) I used initially in February. Afterwards I downloaded them again (twice and from two different sources) to ensure the installation files were not corrupted.
- I even checked, whether they differed using Total Commanders synchronisation tool. They did not.