Edit the application permissions.
Connect the phone to the pc in mass storage mode, then open up the .system folder (make sure hidden files and folders can be seen in windows)
go to /java/downloadapps. there will be a huge bundle of folders if you have installed many java apps to the mmeory card. open each of them, till you find the folder for the particular application. there will be a registry.txt file, open it with notepad++ or wordpad (not notepad).
change Domain: Untrusted to Domain: Manufacturer.
save the file, disconnect from PC and restart the phone.then keep the dtylus for about 3 seconds on the application in the main menu till a popup comes up. click on manage and then permissions. everything is set to never ask. clcik on each of them and manually select never ask again for all. then start your application and check if you can save the attachments
