I've run the script "as is... from the box"
directly extracted from the ZIP file of your Member's Area:
The result is: It runs and hungs at certain point, no message displayed. The categories and photos imported are unaccessible even from admin's account. No comments are migrated. I can only access my own photos (that were not private). No other user can access my photos. Other users can access their own photos but no one else can. Tried setting permissions in Control Pannel but with no luck, photos are still unavailable for other users. Do not know (not sure) if all photos are migrated.
I undid changes with the same script.
Then I did a minor change to the script and put test="1" instead of test="0" at the beginning. It runs showing some arrays (albums to categories I presume). Then it starts moving files from one server folder to another and it stops without further notice or explanation...
Let me know if there's any further info I should give you to better solve this.
Thanks for your patience.