Hi Eliot,

 

Squeak V4.1:

This is happening in base Squeak V4.1, that I downloaded from squeak.org, I believe.  It is using the stock Squeak4.1.image with Cryptography-cmm.13.mcz loaded from http://www.squeaksource.com/Cryptography repository.

1. Select a test case from Cryptography-Tests
2. Click 'run coverage'
3. select Cryptography package
4. BOOM!

Cog VM:

I build the Cog Vm today from VMMaker-oscog.17.mcz.  This is from your tarball plus I did a svn check-out.  It is with Cryptography-cmm.13.mcz loaded from http://www.squeaksource.com/Cryptography repository.

 

1. Select a test case from Cryptography-Tests
2. Click 'run coverage'
3. select Cryptography package
4. BOOM!

AND

 

1. Select StackInterpreterTests from VMMaker-Tests
2. Click 'run coverage'
3. select VMMaker package
4. BOOM!

AND

 

1. Select UPackageTestCase from Universes-Tests
2. Click 'run coverage'
3. select Universes package
4. BOOM!

I hope this helps,
Rob