Place Image Error

Question

I've created a script that grabs a JPG, places it so I can get the dimensions, then creates a batch file for some other software to make it into a TIF packshot. I then place the TIF in place of the JPG (I know that this could be more streamlined). It also makes a couple of visits to some Photoshop droplets in the batch file too.
However,every so often - maybe every 30 images or so, it throws up a placing error when placing the TIF, stating "Error: Either the file does not exist, you do not have permission, or the file may be in use by another application." I put a loop in to wait a second then try again, and I still get the same error so it's not down to Photoshop not releasing the file quickly enough - I've also tried it on a 10 second delay. It occurs sporadically, and if I kill the script and place the file manually, it places fine. I've even tried putting in a break point in the catch function, cycling through the code manually, closing Photoshop completely (which is the last program to access the file), and it still won't place. My link is correct, there's nothing accessing the file, there is seemingly no problem with it at all. I've even tried modifying the file in Photoshop and it saves fine proving that it is not open elsewhere, but the file still won't place. It's almost like InDesign has made a decision that it doesn't like the file on this occasion. If I kill the script and re-run, it will place fine the next time around and another image will go wrong.
The code I'm using to place is:
                           for(counter = 0; counter < 10; counter++)
                                try
                                    imageToPlace = new File(fileLocation+"//images//"+tempEAN+".tif");
                                    gbImage[0].place(imageToPlace);
                                    counter = 10;
                                catch(error)
                                    $.writeln(imageToPlace.modified)
                                    $.writeln(error);
                                    $.sleep(1000);
If it's helpful, I'm running this on the company network, on a windows share from a windows 8.1 machine using InDesign CC 64 bit. It is definitely the place that is throwing the error as the "new File()" bit is working fine. I get the modified date of the file in the catch fine too.
Any help here would be very much appreciated.

Answer 1

Thanks for the response Harbs,
The for loop is only in place because I thought that Photoshop was being tardy releasing file. The exception throws the first time I try to place the TIF.
However, your comment about previews seems to be bearing some fruit. I realized that I have always had a Windows Explorer window of the image folder open, so I think that it is the thumbnail generation there that is causing the problem. I've closed the window and I'm quite deep into the batch of images now and so far I'm error free :-) Thanks for the hint.
However, it doesn't answer why Javascript still thought the file was being accessed, long after Explorer had released it - As I say, I could manipulate the file name and edit the image in Photoshop when I had the explorer window open, which I wouldn't be able to do if the horrid Windows 7/8 Explorer preview system was still using it. Does Javascript need to refresh somehow? I'm trying to make this script restriction free for my colleagues, and I really don't want them coming across errors because they have left the folder they are working in open in explorer.