alright, I downloaded teh new WLM version and instead of getting the error 1603 like on the past build and problem i was having, now it cant create a directory.  Please Help.  Thanks.

sorry to double post, but does anyone know how i can fix this so i can install WLM?

are you doing a clean install?

and just for the record here is list of known issues.
New as of Build 0689


Accessibility

The Sharing Window is not fully keyboard-accessible
Very little support for high contrast mode throughout the Beta


Contacts

EASI passport Messenger users don’t receive an error message when adding a federated contact as an instant messaging contact
The main window doesn't update after editing a contact. You may have to sign out and sign in for the contact list to update.


Installation

Before installing on Windows Vista, you must uninstall previous versions of Messenger. Upgrading from previous versions of Messenger is not supported and can result in unexpected behavior, such as Messenger repairing itself when first opened.


Parental Controls

Parental controls are not supported in Messenger Beta, so restricted accounts cannot log in.


Sharing Folders

Sharing is not supported on unsigned versions of Messenger, such as if a third-party Messenger add-in is installed.
Long delays in replication may result when attempting to sync with multiple active sharing relationships.
Can't delete, open, or edit files when filenames are too long. This most commonly occurs in the <%SystemRoot%>\Documents and Settings\<username>\Local Settings\Application Data\Microsoft\Messenger\<email address>\Contacts directory. To take action on the file, rename it.


Video and Call

Windows Live Call is not yet available in all markets
Using the Call Computer or Video Conversation features on a Tablet PC can cause Messenger to crash.
Call quality suffers when using Windows Live Call on a narrowband connection (dial-up).


Windows Vista Support

Before installing on Windows Vista, you must uninstall previous versions of Messenger. Upgrading from previous versions of Messenger is not supported and can result in unexpected behavior, such as Messenger repairing itself when first opened.
Windows Vista does not support Voice Conversations (Computer Call).
On Windows Vista, the Sharing windows do not always work as expected. For example, gleams do not appear on new items in the Sharing Folder and clicking Delete on the right-click menu does not delete the file from the Sharing window.
On Windows Vista, Messenger might crash if you open the Games or Activities menus in the Conversation window.
When running the Connection Troubleshooter, errors might be reported when there are no errors.


Other Issues

Windows Live Messenger Beta might crash if MSN Shell (a 3rd party plug-in) is installed.
Previously disabled sounds may be re-enabled. 

i was going to check if an older version needed to be uninstalled but non were listed so i just went to program files and deleted the msn messenger folder and it works now.  thanks for telling me this:

quote:

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Originally posted by guanako
you must uninstall previous versions of Messenger. Upgrading from previous versions of Messenger is not supported and can result in unexpected behavior, such as Messenger repairing itself when first opened.

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http://www.securewave.com/contentKnow.jsp?id=6653&metadataId=6653 will help you fix the error

or

http://support.microsoft.com/?kbid=867872