Ive just installed Uniserver 5.5 on a Win 2003 VPS. The install seems fine according to the "server status" dialogue:

the server status

 

However, if I select any of the options in the unitray menu that have a "earth sphere" image ( Admin Panel, phpMyAdmin, WWW Root or SSL Root) I get this weird error:

the error

 

Ive tried hunting the forum for this error, but no luck so far. Anyone got any ideas?

I am not sure what the cause is.

The first image clearly shows servers are installed as a service and running.

I assume if you type http://localhost into a browser the index page is displayed correctly.

Likewise http://localhost/apanel/ also works?

 

That second image displaying

http://localhost:80/apanel/

The parameter is incorrect

Is interesting because it looks like all UniTray links mentioned in you post reach this page:

UniServer\unicon\tray_menu\unitray_info.php

This is where they are constructed for example

//=== Display Admin Panel in browser ==========================================
if($information == 1){
$command = "start http://localhost:$apache_port/apanel/"; // display index page 
exec($command,$dummy,$return);						   // run command 
exit;
}

That code creates the link you have in your image.

Similar code within the core will have started the servers hence I cannot see what throws this error “The parameter is incorrect”

 

Although interesting I cannot offer a solution.

 

All the best

Ric