Insufficient debug info when Warning: The following definitions had errors while loading.

[dolezvo1]

I've been trying to update an older project to work with newer codebase. During the install, I got the following warning/error:

The following definitions had errors while loading.  Press Proceed to try to load them again (they may work on a second pass):
[list of classes with errors]

That is to be expected, but the issue is that this warning/error does not (as far as I can tell) provide any information about the individual errors in the given definitions, which is very unhelpful for someone trying to fix those errors.

There is a variable called errorDefinitions which contains the definitions mentioned in the message above, but no trace of the exact errors.

[Ducasse]

Yes we know and we faced this (suboptimal) design. It is bad. This behavior is a legacy.
Can you tell us on which version of Pharo you are experiencing it?

[Ducasse]

Can you also provide a little case showing your problem so that we can use it to see how to fix it.