1. please take the time to read the messages from the software. You can learn a lot from them. They are included in the log file you attached.
2. one of the messages says: “If you need assistance, please include the file lasterror.mat “. without that file we cannot help.
3. here you have some material to learn how to use the software http://www.sarproz.com/tutorials/
4. as it says here http://www.sarproz.com/publish/data_import_partI.pdf and here http://sarproz.com/manual/scegli_dataset.html you have to create a project folder. And we suggest you to do it in a proper disk dedicated to SAR projects. Sarproz generates a directory tree with also some common folders shared with other projects. Making an SLC folder on the desktop is strongly unadvised.