are you sure that u have a folder on ur sd card labeled XDA_UC with the cabs in it? im 100% sure that you dont, cuz ive forgotten to name the folder myself sometimes lol, and the message " XDA_UC has completed successfully, installation of CAB's, XML's, Manila files, registry edits, and signing of drivers has finished without errors.
Save your work now & Press OK to continue then press Yes to soft reset " comes up after its finished installing everything, and in ur case, if theres no folder, then it just thinks its done and asks you to soft reset
hope that helps bro, hit thanks if it does =)