SYMPTOM:
In order to use the Blackberry simulator is necessary to run the MDS Services Simulator Package. Just after installing the MDS Services Simulator Package on Windows 7 and trying to launch it by the first time, a GUI similar to a command line terminal starts opening and closes suddenly without any error message.
CAUSE:
The folder permissions of the MDS Services Simulator Package were not applied correctly by the installation process.
ACTION:
Grant the Full Control permission for the user who is trying to launch the MDS Services Simulator Package. By default this folder is located on Drive:\Program Files\Research In Motion\BlackBerry Email and MDS Services Simulators 4.1.2\MDS

NOTE:
This issue has been seen so far only on Microsoft Windows 7.
REFERENCE
Refer to the following technical note to know about how to configure Blackberry simulator:
Third Party Software Installation:
WARNING:
The third-party product(s) discussed in this technical note is manufactured by vendors independent of Strategy. Strategy makes no warranty, express, implied or otherwise, regarding this product, including its performance or reliability.