The problem is that SwirlyMMS is saving the pictures with the owner root instead of mobile. I’ve come up with a couple of solutions for this:

• Change to the camera roll picture directory in putty or Mobile Terminal and type  chown mobile IMG_0036.JPG replacing IMG_0036.JPG with the name of the picture
• Browse to the camera roll directory in WinSCP and use the custom command chown mobile ! on the affected picture
• Use my bash script from within Mobile Terminal (I have it saved as fixswirly.sh in /private/var/mobile as this is where my Mobile Terminal starts up):

#!/bin/bash
PhotoDirectory="/private/var/mobile/Media/DCIM/100APPLE"
 
# Setup find correctly.
export IFS=$'\n'
 
# Loop through the photo directory.
for x in ${PhotoDirectory}
   do
      # Find all Files
      for i in $(find $x -type f)
         do
            # Fix Permissions
            chown mobile $i
         done
   done

It has to be run as root and if you run it from a location that is not on your PATH you will need to run it as such: ./fixswirly.sh or sh fixswirly.sh

Based on an example Bash script by linickx.com