Open Folder code not working after technical upgrade

Hi all,

Doing some testing on a technical upgrade from 3.60 to 2009, have found one bit of code that doesn't work. On several forms I've added a button to open a folder from a directory on the server (or create it if it doesn't exist), the code came from these forums although I've tweaked it a bit:

FolderName := "No.";

IF ISCLEAR(FileSystem) THEN
CREATE(FileSystem);

// If the folder exists, open it
IF FileSystem.FolderExists('\\rocdc01\sales\ac_files\'+FolderName) THEN
SHELL('c:\windows\explorer.exe \\rocdc01\sales\ac_files\'+FolderName);

// If the folder doesn't exist, ask if you want to create it then open the folder
IF NOT FileSystem.FolderExists('\\rocdc01\sales\ac_files\'+FolderName) THEN
IF NOT CONFIRM('The folder does not exist. Do you want to create it?') THEN
EXIT
ELSE
FileSystem.CreateFolder('\\rocdc01\sales\ac_files\'+FolderName);
SHELL('c:\windows\explorer.exe \\rocdc01\sales\ac_files\'+FolderName);

The globals are:

FileSystem / Automation / 'Microsoft Scripting Runtime'.FileSystemObject
FolderName / Text / 50

The only bit that doesn't work is the part where it opens the folder, each time it tries the system displays the following error:

The operating system cannot find the drive and directory that are specified for the file "c:\windows\explorer.exe \\rocdc01\sales\ac_files\AC07694" .

Verify that the drive, directory, and file names are correct.

Any help appreciated!