Current questions and answers regarding the map editor.

Try launching the map through the multiplayer menu.

Added 11 minutes later
1, 2. I recommend creating videos not together with the map, but through Resource → New MOD. This creates a file with a list of objects created in that mod, and they won't "disappear." 3. There are two types of cameras, let's call them T and E (based on the hotkeys). The E-camera is simply a camera position. The T-camera consists of 2 E-cameras, between which a gradual transition will be made + some parameters (number of circles, direction of rotation, ...). When assigning dialogue, T-cameras are used. 4. Animation for creatures and heroes is assigned by pressing I or 9 on the numeric keypad while the object is selected.