hey guys i m a new user of grasshopper and while i started testing some of the tutorials from an e-book i found on net in the task when we have to select multiple points the computer screen goes blank although working on the background but theres nothing displayed on the screen.
i cant even proceed to the next level of tutorials because same problem continues.
currently i m using Rhino 4 SR 2
with system config as:
Dual core 64 AMD
128 graphics card
windows Xp home edition
if anyone has the solution to this promblem please do let me know thanks