The log file shows what happened while A-A-P was executing. Often you can figure out what went wrong by looking at the messages. The log file is named "AAPDIR/log". It is located in the directory of the main recipe. If you executed aap again and now want to see the previous log, it is named "AAPDIR/log1". Older logs are "AAPDIR/log2", "AAPDIR/log3", etc. This goes up to "AAPDIR/log9". Messages The kind of messages given can be changed with the MESSAGE variable. It is a comma separated list of message types for which the message is displayed. Other messages are still written in the log file. name display message for all everything error errors (&Aap; cannot continue) warning warnings (things that are wrong but &Aap; can still continue) note notes (warnings about things that are probably OK) depend dependencies, the reasoning about what to build info general info (file copy/delete, up/downloads) extra extra info (why something was done) system system (shell) commands that are executed result the result of system (shell) commands changedir changing directories The command line arguments "-v" and "-s" can be used to make the most often used selections: &Aap; argument $MESSAGE value (nothing) error,warning,system,info -v all --verbose all -s error --silent error Other values can be assigned at the command line. For example, to only see error and dependency messages: aap MESSAGE=error,depend (other arguments) Don't forget that excluding "error" means that no error messages are displayed! No matter what messages are displayed, all messages are written in the log file. This can be used afterwards to see what actually happened.