I upgraded to 3.4 and when I start LRTL I originally got a Java error where it can not create Java Virtual Machine and I applied the fix ( _JAVA_OPTIONS and the Variable value to Xmx512M) for that and now when I try and start LRTL it starts and I get the quick LRTimelapse splash screen and then nothing. I have uninstalled LRTL and re-installed and cleaned the registry and still no joy.

Please advise.

Are you on windows or mac?

If on windows please uninstall all Java versions via control panel.
then install the latest from here:
http://www.java.com/en/download/manual.jsp
Make sure to install the 64bit version if you are on a 64bit Windows!!

There is no need to mess with any java options, please don't!

Then install LRTimelapse again.

Thank you, dont know how my Java got corrupted.