There is a downside of sorts to this Mod.
You must first attach your files to your post and then save the post. Once the post has been saved, the attached files will have been uploaded and then you can edit the post and place the attached files wherever you wish within the post. Kind of like posting twice, but it work out in the end.
Regarding the downside stuff. It still has a bug imo, the images look like they are clickable even though they're not. Just curious why you'd go to all the trouble getting it to work + adding another mod, when you can embed a pic straight from one of your galleries.
Well... yes, I can do that. For me this just seems a little easier to do, with less steps.
With the gallery you must go to: Gallery > Add Picture > and then do all the(several) steps to add an image... then go to: Gallery > Album > Last Page of the album and select the image. Then copy the image url and paste it into your topic. Easy enough to do, but a lot of steps.
With the attachments Mod you go to: Your Topic > Add Attachments as Normal > Save/Post Your Topic > then go to: Modify Topic > and insert your images as desired.
Both ways gets the job done, but the attachments do it better if you have the need to do lots of image attachments.