I had to repair my Windows 7 installation but after I did this, MAX 5.1.8 stopped working. Strangely enough MAX runtime works fine. I tried the following:
uninstalling and re-installing.
Installing an earlier version (5.0.8) and then upgrading to 5.1.8: in this situation MAX 5.0.8 worked fine but when I upgraded to 5.1.8 it stopped working again (except for MAX Runtime)
Tried the installations above with both virus protection enabled and disabled.
I am running Windows 7 x64 (SP1) on an i7 950 3.06 MHz laptop.
Will appreciate any help.