android sdk screen dumps broken

if you update your google android sdk you may find that Ctrl-S screen dumps are now broken and it just says "Screen Unavailable" this may be because in the latest SDK 8 google have split the binarys (adb, ddms, etc) into two subdirectories /tools and /platform-tools

try re-editing your bashrc so that your PATH  includes both these subdirs

export PATH=${PATH}:<android-sdk-linux_x86>/tools:<android-sdk-linux_x86>/platform-tools

rerun ddms and try a Ctrl-S screenshot again