Due to recent bot attacks we have changed the sign-up process. If you want to participate in our forum please send a message via our contact form. › Forums › OpenLB › General Topics › I cannot run cylinder2d example?! › Re: I cannot run cylinder2d example?! March 17, 2018 at 5:38 pm #2810 Markus MohrhardParticipant Hello Luis, Can you provide the output of pwd, cat Makefile and cat ~/olb-1.2r0/config.mk ? Regards, Markus