Hello,
I had a produced problem of image which not posted(shown) not. The years the file .htaccess I commented on the line which redirected the file(case) upload towards a page 403 and it corrected the problem.
I ask myself the following question: why suitecrm configured the upload file(case) like that? What is that my solution is not dangerous:S
Also why have to we put file(case) in 775 is not a major risk of safety(security)?