[kh99]

I think it is a bug, it seems to do the attachment stuff even if you have that option tunred off. You could see if that's been reported as a bug, but meanwhile you could make a temporary fix by editing file clientscript/ckeplugins/vbimage/dialogs/image.js, and around line 109 where it looks like this:

doAttachmentFromUrl: function(dialog)
{
	var url = dialog.getContentElement('from_url', 'url').getValue();
	if (dialog.getContentElement('from_url', 'remote_file').getValue())
	{
		var postData = {

change it to look like this:

doAttachmentFromUrl: function(dialog)
{
	var url = dialog.getContentElement('from_url', 'url').getValue();
	if (false) //dialog.getContentElement('from_url', 'remote_file').getValue())
	{
		var postData = {

(the only change is that I added the part in red).