Pharo Cog Spur Virtual Machine has stopped working, restore a broken image - smalltalk

Question

When I try to launch a Pharo Image that I have been working on, Pharo opens, but then immediately crashes.
Can anyone help me figure out how to either:
save my image?
save the code in my image to copy to a new image?
dig in and investigate this further?
When I open my image, it now crashes and shows the following crash message:
Pharo Cog Spur Virtual Machine has stopped working
In the details, I get the problem signature:
Problem signature:
Problem Event Name: APPCRASH
Application Name: Pharo.exe
Application Version: 5.0.0.0
Application Timestamp: 00000000
Fault Module Name: StackHash_e5fb
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Code: c0000005
Exception Offset: PCH_94
OS Version: 6.3.9600.2.0.0.256.4
Locale ID: 2057
Additional Information 1: e5fb
Additional Information 2: e5fbb79501a5ec44936c965495b7ed9d
Additional Information 3: 87e1
Additional Information 4: 87e19eaa5875c71ec8875aadb1c1eca7
I am launching my Image from "Pharo Launcher version: 2.2".
My image was created from the template: Image template (Pharo 8.0 - 64bit (stable))
In my image I loaded Roassal3 from github://ObjectProfile/Roassal3:v0.9.5
I tried copying my image, and opening the copy, but same result (as expected I guess).
I had a look at PharDebug.log, but I'm not really sure what I'm looking for. This is a copy of by PhaorDebug.log.
Thanks

Answer 1

I started to answer in comment then it got too long for it.
It is always best to save your work to CVS like merucrial or git. Pharo has a facility called iceberg for git. I would recommend pushing your changes instead of relying on the image. You have to then recover the file using the *.changes file.
Also it would be helpful to see the PharoDebug.log. You can share it with us via pastebin.com or similar.
If the Cogs VM crashes on you you have to go to a .changes file which should have the same name as your image file.
For example:
For image Pharo8.0-command_line.image, you will find your changes in Pharo8.0-command_line.changes file.
To recover your code:
Backup your changes file
Download a fresh new image
Run Pharo with new image
Drag the .changes file into Pharo
Use Change browser to pick up the code you want to recover.
Report the bug:
You should report the bug at Bug report for Pharo.