I just "finished" RIVEN recently...well, I got as far as trying to open the Star Fissure porthole hatch under the telescope (after prepping it correctly) but when I use the 5-digit code (from Cath's journal) nothing happens...I played though TWICE (2nd time only took 3 hrs) & the same thing happened- cant open the porthole!
I referred to/studied both gamefaqs guides to a 'T', but I cant figure out what I'm missing/doing wrong. Catherine mentions "signalling Atrus", & the temple in her final instructions but there doesnt seem to be anything to do there & I cant leave the island. Are there certain requirements that must be completed earlier in the game?
Thanks in advance for any/all help!