I have installed and used LRTL4 successfully on my main desktop station.  I've also used previous versions on my laptop which I use when travelling.  Now on installation of v4 and update to 4.5.1, I can't launch LRTL.  I can see the LRTL splash screen just very briefly, but then nothing.  Could someone help me to figure out what I may have missed.
I've tried both installing and running as Admin, with no success. 
System: Win10x64, 16gb RAM. 
Thanks.

I assume you have a 32bit java environment installed. Please use the control panel to remove all instances of java, then install the 64 bit version of java, download link here: http://lrtimelapse.com/install