Cannot Access Devices Tab and Web Service Error

Problem: After installation, you cannot access the Device Users > Device tab in Sybase Control Center, and the Unwired Server log shows an ADMIN_WEBSERVICE_INVOCATION_ERROR.

Explanation: This may indicate you have a port number conflict for the messaging administration Web services server listener port.

Solution: Change the port number.

Navigate to: <UnwiredPlatform_InstallDir>\UnwiredPlatform\Servers\MessagingServer\Bin
At the command line, enter:
```
AdminWebServicesTool.exe set=<port>
```
Where <port> is the new port number. Alternatively, enter this to change the port number and restart the listener using the new number.
```
AdminWebServicesTool.exe set=<port> restart
```