Hi
Ok. so I tested again from Frontend:
Sometimes Users suddenly loose upload rights even if they created the category, including admin (frontend)... "You are not authorized to upload to this category" while the Backend still shows that they are authotized to upload to that category.
My server allows up to 40MB file uploads, I also changed this on Joomgallery options and yet it cannot upload files bigger than 6MB and sometimes not even 500KB.
Single upload (Imagemagik, GD2):- If more than one file is selected I get:
Fatal error: Cannot use string offset as an array in /administrator/components/com_joomgallery/helpers/upload.php on line 195
Single upload (GD):- 1 or many small images (less than 1MB total) works ok.
- 1 or many image (+1MB) gives:
Fatal error: Out of memory (allocated 31457280) (tried to allocate 12288 bytes) in /administrator/components/com_joomgallery/helpers/file.php on line 491
Batch upload (Imagemagik, GD):- Only works if zip is less than 6Mb!!
- Otherwise, I get two error messages:
JFolder::delete: cannot delete a base folder.
Warning: Invalid argument supplied for foreach() in /administrator/components/com_joomgallery/helpers/upload.php on line 643
Batch upload (GD2):Fatal error: Out of memory (allocated 31457280) (tried to allocate 13056 bytes) in /administrator/components/com_joomgallery/helpers/file.php on line 543
Java upload (Imagemagik):It seems to be working now but I used to get a popup error message:
Alert: Upload was stopped with errors.
Java upload (GD2):wjhk.jupload2.policies.PictureUplaodPolicy.checkUploadSuccess():The regexp string `JOOMGALLERYUPLOADSUCCESS` was not found in the response body
Java upload (GD):- Works if more than 30 images but less than 2MB overall.
- 1 image bigger than 500KB gives:
wjhk.jupload2.policies.PictureUplaodPolicy.checkUploadSuccess():The regexp string `JOOMGALLERYUPLOADSUCCESS` was not found in the response body
FTP upload:- Works but its not a day-to-day user-friendly method and not even allowed on Frontend.
I do know that most of my users will be using their
iPad (school teachers) as a means to upload their images and I believe Java upload is not at all compatible with the iPad (correct me if I´m wrong)

so even if it works with Imagemagik its not the best solution in this case
Sorry for the long post