When try to install Office 2003, appears an error 1311: source file not found (error-1.png). In debug.log, before showing this error message, I see the following line:
(may be a possible source of problem).
Also this lines are interesting:
If to click "Retry", this error appears again. If to click "Cancel", opens Microsoft error reporter (error-2.png). Also after ~1-2 minutes since opening error reporter, Office installer crashes.
If to close error reporter before crashing Office installer, it rolls back changes and then closes.