Go to:
Library / Software / Right click on Game Guru / Select Properties / BETAS (forth tab) / Select - down arrow / Public Preview.
Should be last on the list, if no update straight away. Try to load Game Guru from menu, by double click on Library List.
Also the other way to check if easier. Load Game Guru and go to 'Help' top menu in engine, then click About. will let you know what version you have, and welcome from me to the forums
Define R4, i5, 16g, R9 290