Grimmus,

This has long been a known issue with the HTML Editor but you must keep in mind, as was already mentioned, the HTML Editor is a third party product that was not written by NetSource (or the previous Early Impact).  Basically what happens with the JavaScript popup is the buffer fills up and time's out.  Due to the way it was written, it tries to index the entire folder before anything is displayed which is fine for smaller catalogs but as you can see, once you cross a certain threshold (it varies by the way), it just stops working!

There is however a work-around ... not a perfect solution but a workaround nonetheless.

The old version of the file upload GUI was left in the code and carried forward so all you need to do is use the file in the pcadmin directory named [ ImageUploada.asp ]

What we do for our own customers that have large catalogs is alter the [pcv4_navigation_links.asp] file also located in the pcadmin directory.  If you open that file and go down to around line 34 (in v4.7), you will see the line that reads:

<li><a href="pcv4_image_upload.asp">Upload Images</a></li>

Replace that line with the following:

<li><a href="ImageUploada.asp">Upload Images</a></li>

You can now access that version of the file upload by going to [Settings-->Images & Navigation-->Upload Images]

PLEASE NOTE this does not fix the issue in the HTML editor but what it does do is give you the old interface for uploading images and files to the pc/catalog directory that will work.  You will need to manually code in the links in your descriptions however with the catalog path in mind.

I believe this issue has been addressed in V5 but for those that will be in V4.x for a while, I hope this helps.