1.5.4 Crashing upon launch

Hell all. New to LVGL and just downloaded 1.5.3. Ran it to try the tool and the s.w reported that 1.5.4 is now available. Downloaded 1.5.4 which removed 1.5.3 off the Windows system being used. Launched 1.5.4 which pops up a splash page for under a second and closes (crashes??). What to do?

Update - Removed 1.5.4 and installed 1.5.3 again. The 1.5.3 installation runs just fine.