When trying a SpaceTally in the 20601 image it fails because a SharedPool does not understand #values. See SpaceTally>>#computeSpaceUsage and SpaceTally>>#spaceForPoolsOf:depth:seen: which appears to have been changed from the 5.3 code at the end of last year. Guess that shows how long since I last tried it in a 6.0alpha image...

Simple fix suggestion - 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: SharedPoolTallyFix.1.cs
Type: application/octet-stream
Size: 1108 bytes
Desc: not available
URL: <http://lists.squeakfoundation.org/pipermail/squeak-dev/attachments/20210821/8cd779f7/attachment.obj>
-------------- next part --------------

Yes, one could simply implement #values in SharedPool but I consider decently descriptive message names to be very helpful in understanding what is going on. Otherwise we might as well just use numbers...

tim
--
tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
Strange OpCodes: MAW: Make Aggravating Whine