TWG 2.4.8 is available which only fixes one bug in the image counters!
In 2.4.7 this was broken and leads to the problem that each counter was not updated but added to the file! So each call was increasing the counter file!
Please update and go to the xml folder and delete all *_image_counter.xml files. They are invalid and way too big! Keeping them will slow down your gallery!
Get the latest version or the patch here:
Sorry for the inconvenience and thanks to Dennis who reported it.
Have fun using TWG,