X64 version not working

i have problems getting the x64 version to run on two windows7 machines. 32bit version works. any idea ?

logfile attached

2014.07.03-11.28.21.log (2.0 kB)

hm the log says “is not a valid Win32 application.” so you’re sure your win7 is actually an x64 version? does setup.exe run? a quick google suggests that it could be due to a missing .net installation. so maybe try to update that…

its 64bit and yes, .net is fine and up to date…strange. i just decided not to investigate this further and installed windows 8.1 now, all is good.