There have been reports of instability / crashes / failure to run caused in a few different scenarios:

1)If an application firewall such as Zone Alarm or Comodo is installed and

   configured to prevent keyboard scanning (MediaMonkey monitors the keyboard

   for various multimedia keys and shortcuts). To solve this, configure your

   firewall to allow keyboard scanning for MediaMonkey.

   Cover-Up (by PC-magazine) is also known to cause the same problem.

   It must be uninstalled.

2)Some applications are known to cause MediaMonkey to crash:

   - Folder Lock. Solution is to uninstall (use Truecrypt instead).

   - Applian Replay Player. Solution is to uninstall.

   - AnVir. Solution is to uncheck "Show additional icons in the titles of windows"

     under "Options > Windows Enhancement > System Menu and Dialogs"

   - ZumoDrive: You must start the ZumoDrive application or configure MediaMonkey

     to ignore this drive. See step 3 at: 

     http://www.mediamonkey.com/support/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=41

   - TeamViewer. You must log out of TeamViewer before using MM, or you can run MM

     with TeamViewer open, but you must use the unskinned version.

   - Speech Recognition software like Dragon Natural Speaking. Upgrade to MediaMonkey 4.

   - Samsung MultiScreen on Windows XP. Solution is to uninstall or run MediaMonkey in skinless mode.

   - DisplayFusion. After Hibernation it will cause MediaMonkey. Solution is to not Hibernate or run DisplayFusion.

3)If Quicktime has been corrupted in some manner, it may prevent MediaMonkey from

   starting up.  To resolve this:

   - re-install the latest version of Quicktime from Apple.

     AND/OR

   - Disable the iPhone/Touch plug-in. To do so:

     a) Close MediaMonkey

     b) Rename d_iphone.dll in the \Program Files\MediaMonkey\Plugins folder to d_iphone.dll.off

     c) Restart MediaMonkey.

4)If the Vista Transformation pack or another Desktop Skinning application (e.g. 

   Window Blinds) is installed on Windows XP, it will prevent MediaMonkey from

   running beyond the splashscreen due to conflicts between MediaMonkey's skin

   engine and that of the Transformation pack.  To resolve, re-install and disable the option:

   'Enable full skinning' during the installation. 

5)On some systems with some portable devices (e.g. U3 keys), operating

   MediaMonkey with the device connected has been reported to cause

   instability. To solve this:

   o Edit the MediaMonkey.ini file to ignore the virtual drive letter of the U3 device:

      In change IgnoreDriveLetters=AB to e.g. IgnoreDriveLetters=ABG

      Where G: is the virtual drive created by the U3 system 

      For information about editing MediaMonkey.ini see:

      http://www.mediamonkey.com/support/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=17

   o Disable U3 capabilities either by:

      - In Windows XP, Right Click On My Computer -> Properties -> Hardware 

        -> Device Manager -> DVD/CD-ROM devices and Disable U3 CD-Rom

        (Right Click -> Disable).

      - Removing the U3 Launchpad, and turn your U3 drive into a regular USB flash

        drive, as described at: http://www.u3.com/uninstall/  . Note that you can

        get much of the same functionality via: http://portableapps.com and

        http://www.portablefreeware.com

6) There are known Issues with both Zecter Products ZumoCast and Zumo Drive:

    i) Zumocast is known to trigger a crash with MediaMonkey.  The following workaround

    fixes this:

       a) Exit Zumocast

       b) Go to the Windows Shell (i.e. type the following in the Windows search bar: cmd)

       c) In the Shell, type: regsvr32.exe /u "C:\Program Files\Zecter\ZumoCast\ShellExt.dll"

       d) Press ENTER then exit the Windows Shell, Run MediaMonkey and ZumoCast



    ii) Zumodrive is known to trigger a crash with MediaMonkey.  The following workaround

    fixes this:

       a) Edit MediaMonkey.ini http://www.mediamonkey.com/support/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=17

       b) Locate line IgnoreDrives= and add Drive letter occupied by ZumoDrive

       c) Save modified MediaMonkey.ini and problem should be solved