Community Tip - If community subscription notifications are filling up your inbox you can set up a daily digest and get all your notifications in a single email. X
Try adding following option at the end of config.pro file.
quality_agent_path <CREO_installation_directory>\DiagnosticTools\x86e_win64\obj\qualityagent.exe
In my installation it is ... E:\PTC\Creo10_030\DiagnosticTools\x86e_win64\obj\qualityagent.exe