Database Login failed:Failed to connect to SLXServer.

ERROR MESSAGES:
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Database Login failed:Failed to connect to SLXServer. Check if the server is running and is compatible with the current provider version

Resolution:
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http://www.slxdeveloper.com/forum.aspx?forumid=3000&postid=11806

Possible Resolution 1:
Delete and recreate the database and datalink connections. For more information see, How to delete and recreate the datalink and database connections.
Possible Resolution 2:
Verify Windows Firewall is set to allow SLXSystem.exe as an allowed Exception. If not, select to allow it and reboot the machine.
Possible Resolution 3:
Restart the SalesLogix services. For more information see, How to stop and restart the SalesLogix services.
Possible Resolution 4:
Add Server IP address to the system32 host file since DNS is not being used.Note: Refer to Microsoft's Knowledge Base for information on updating Windows System32 host files.
Possible Resolution 5:
Uninstall and reinstall SalesLogix. For more information see, How to uninstall and reinstall SalesLogix.
Possible Resolution 6:
Reboot the computer(s) experiencing this error.
Possible Resolution 7:
Check the version of the executables for SalesLogix and the bundles that are installed. The version map is available on Support Online for more information as to what version of executables are for which version of SalesLogix.
Possible Resolution 8:
Check network connectivity on the effected workstation. The error can be recieved with a network failure or a failing NIC (network adapter) causes a workstation to be isolated from the client's network.
Possible Resolution 9:
Start the COM+ Objects. For more information, see How to start and stop COM+ Objects.