An "Invalid INSTALL.LOG" error occurs when attempting to uninstall TOAD with either the Uninstall.EXE in the TOAD directory or through Window's Add/Remove Programs.
1) Uninstall Toad and its modules manually by deleting the corresponding directory, shortcuts, and uninstall entries.
2) Remove application from Window's Add/Remove Program by clicking the remove button. It will detect that the program is no longer there and should ask whether or not to remove it from the list.
There is no need to remove any entries from the local registry.