When I try to set the localization key on a control, I receive a message indicating the solution preferences must be setup. I click on 'Yes' to setup the solution preferences and receive a visual studio error 'An error occured while refreshing data from field 'DTEPreferencesBO.pref_prj_pk' to property 'selected value' on control cbomessages.

Any sugestions on how to solve this problem?

Sorry for the delayed response.  It was a hard push to get 1.5 out the door and we did not get to all of the questions yesterday. 

The problem that you are having in your StrataFrame connection.  The Framework, Database Deployment Toolkit, and Messaging and Localization all use the same database and connection string.  The frameworks database is named StrataFrame.  In 1.5 we prevent the developer from being to change this value so it should help resolve some issues.  To verify your connection, do the following:

1. Open Visual Studio
2. Click StrataFrame -> Database Connection
3. Select the "StrataFrame Data Store" or whatever it may be named now (the name of the connection does not matter)
4. Click "Edit"
5. Once the Wizard appears click Next >
6. Make sure that the server is pointing to the server that houses the StrataFrame database
7. Make sure that the Database is set to StrataFrame
8. Click Next >
9. Click Finish

This should get your connection working.  If you are still receiving the error, then your database must not be updated properly.  To resolve this, just download 1.5 and install the new release.  This will update the data structures.