Unable to open LO 6.1.4

hi, i am using windows 8.1, 64 bit os. download LO 6.1.4 win_64, installed it, but unable to open LO main page after installed. nothing error showing, continue hang-on, background no other program’s running. kindly guide whats are the issue may be for not opened.

Are there any error messages in Windows Event Viewer?