Cannot rename files in directories in Windows 7

Hi, I have this very strange problem which is pulling out my hair.

I want to rename a file in 3 or 4 level folder

The code is simple:

<?php


				$oldthumb1path = "../TEST/Pics/TSTXX/TSTXX-Portulaca_nigra_t.jpg";
				$newthumb1path = "../TEST/Pics/TSTXZ/TSTXZ-Portulaca_nigrescens_t.jpg";
				

				print "<br><br>	Renaming $oldthumb1path to $newthumb1path ...";
				if (rename ($oldthumb1path , $newthumb1path)) {print "<font color=green> Success! </font>";} else { print "<font color=red> Rename failed.</font>";}	
				


?>

The result is that the renaming fails with a wrong error message:

Warning: rename(…\TEST\Pics\TSTXX\TSTXX-Portulaca_nigra_t.jpg,…\TEST\Pics\TSTXZ\TSTXZ-Portulaca_nigrescens_t.jpg): No such file or directory in E:\WEBSITE…

The php file is in a php folder common with folder TEst (hence the …/) The strange thing of them all is that if I place the php script in the folder were the file is present (hence in folder TSTXX) the renaming takes place successfully. I really need a tip to solve this since I been programming a long script to rename my web image files (10,000s) automatically, and I am not in the mood to rename them manually.

What’s wrong ? 100% sure that there is no typo in the filenames, and the destination file does not exist.

OK, I found the problem, it was my mistake with the folder TSTXZ was not created!