After installing the module, when I try to create a Image Gallery page I get the following:
Error: DataObjectManager requires the SWFUpload module.
Yet I've properly renamed and installed the folders as instructed in the root folder of silverstripe installation
(i.e., dataobject_manager, swfupload, image_gallery -- all lowercase without the version info. I've rebuilt the database (.../dev/build?flush=1) a few times, removing the folders and then re-inserting them. But it makes no difference, I get the same error!
I ended up downloading the wrong version of SWFpload from www.swfupload.org, which someone else had suggested in a forum posting. I didn't know that there was a silverstripe version until now at http://silverstripe.org/swfuploadfield-module/. Once I installed the SS version everything seems to work.