As I’ve been out of the loop the past day or so, Sims Nieuws informed me that there is a big problem for those with integrated video cards dealing with reflections and the Security Level 7 in your kingdom.  Here’s what the Sims Medieval team has to say about the issue:

Problems With Reflections and Security Level 7

Hello all,

There are two issues that appear to be causing crashes for some users. After reviewing the system information it appears the majority of the systems affected are using integrated video cards. The two issues are below:

1) If the Enable Reflections is on a crash will occur when viewing a room with a mirror. To turn off reflections:
-Click the … icon in the lower left of the screen then click Options…
-Uncheck the Enable Reflections option.

2) When the kingdom’s security level reaches 7 the security walls are placed in the kingdom.
-To avoid this issue do not place a building that will cause the security level to exceed 6.

We apologize for any inconvenience this has caused and are doing everything we can to resolve the issue.

The Sims Medieval Team