I receive a 500 error every time I have installed. Looked in Metrics>Errors on cPanel and read:
.... SoftException in Application.cpp:267: File "/home/ice/public_html/v4osCtest/index.php" is writeable by group Can't say I know what Application.cpp:276 is. I changed permissions on index.php from 664 to 644 and the install worked after that.