The problem started when I changed the skin built-in display setting to WXGA720.
Then everytime I’m trying to run the emulator it says the following message:
Starting emulator for AVD ‘android403’
Failed to allocate memory: 8
This application has requested the Runtime to terminate it in an unusual way.
Please contact the application’s support team for more information.
I already tried to lower down the RAM size to 800 MB and then 512 MB (or even 256) but it didn’t work either…
I don’t know what to do…
Here’s a screenshot of the emulator settings window:

Thanx upfront.
I do sometimes have the same problem. Maybe my solution works for you as well: Instead of choosing the WXGA720 skin preset, manually set the resolution to 720*1280, and manually set the RAM to 768 or even 512.
Seems stupid, but it makes a difference if the skin preset is uses or a manual resolution configuration.