Multiple Installer/Uninstall Fixes.
Program files are cleanly deleted on uninstall as well as Picturethrill task is cleaned up properly.
Install will now detect whether a previous version of this product is installed, and it will uninstall it.
Better error reporting, now errors will contain line numbers in App log file.
- If you had previous installation of Picturethrill it is suggested that you Download and Install this release twice to make sure that all old settings are overridden.