The output from the commandline interface can be piped to a log file although this is only available with the purchased version. This can sometimes give a clue to a crash, particularly with things that cause a crash prior to rendering commencing. This is the command I use:
%TERRAGEN_PATH%tgdcli > %TERRAGEN_PATH%core1_log.txt
I have two of these to run 2 copies of TG2 on a dual core system with separate logs.
Other than that the answer is usually no. Once a render is finished (or stopped) the image is automatically saved to a temporary folder which can be a big help. This has just saved me one render where I didn't have enough GDI resources left to actually save the finished render. Other than that, if you find a particular project has crashed part way through it's often due to running out of RAM. You can watch the progress of the memory usage using the Task Manager although this is a very manual process. Make sure you include virtual memory as well, as it's the combined total of RAM and virtual memory that will be the killer.
Running other apps can contribute to problems. Other than that.. maybe finetuning your zen so that you don't care so much when things go wrong

It is a prerelease, so you have to expect some problems but there is still a lot that you can do.