Hi all, 
I just lost a lot of time while playing with the repeater fieldtype working with imagefields and textfields. 
I added to a repeater fieldtype : 
checkbox fieldtype
image fieldtype
text fieldtype
And I modified, like I do often, the Visibility and Required settings. So when I my checkbox is unchecked, the image field is displayed and required, and the text field is hidden (and not required). And vice-versa when my checkbox is checked. 
The problem is that when I use these settings, I'm unable to delete the images I upload (but I can add them), and unable to modify my text field. When I click on Save, the changes are not submitted. 
Does somebody already had this issue ? 
Thank you !