We strive to maintain compatibility for user written plugins with new versions of ASPECT for as long as possible. However, occasionally we have to restructure interface classes to improve ASPECT further. This is in particular true for new major versions. In order to allow running old plugins with newer ASPECT versions we provide scripts that can automatically update existing plugins to the new syntax. Executing doc/update_source_files.sh with one or more plugin files as arguments will create a backup of the old file (named old_filename.bak), and replace the existing file with a version that should work with the current ASPECT version. Using this script would look like this: