I fixed the crash on export for the next build, but this is always going to be a colossally slow and memory consuming project to preview and export, because it is designed ignoring all of our best practices about memory usage.
Read Remember not to waste your memory very, very carefully.
Construct 2 estimates your project's memory usage to be about 3.6 gigabytes. It's surprising it runs at all, and very few systems will be powerful enough to start it up. You have a lot of images that are over 2048x2048 in size, and even some which are 14,793 pixels across. That is more than 7 HD monitors across, and for about 70% of GPUs, so large that they will not even be able to load it.
The main problem here is your project is extremely inefficiently designed. Nevertheless I fixed the crash on export so it should at least export on the next build, but you should probably re-design it from the ground up using as few images of the smallest size possible, since in its current state even if you can export it, I'd guess only around 5-10% of desktop machines are powerful enough to run it.