I revisited my MonticelloProjects experiment yesterday, and am still crashing the vm when serializing to a compressed fuel file. I wrote about it at the time, and then gave up as the vm was less stable during that period.

http://forum.world.st/Working-with-a-compressed-Fuel-file-td4869105.html

and it looks like the issue referenced:

http://forum.world.st/Re-Pharo-project-GZipWriteStream-crashing-my-VM-when-s...

To reproduce in a pharo6 image:

|project| Gofer it smalltalkhubUser: 'StephanEggermont' project: 'MonticelloProjects'; package: 'MonticelloProjects'; load.

project := (Smalltalk at: #MCProject) new location: 'http://smalltalkhub.com/mc/StephanEggermont/Documentation/main'. project read. project saveToFile.

That reliably crashes in saveToFile.

It seems to be independent of 32/64 bit and mac/linux, as I tried some variations.

Stephan